JPS6132694B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a word processor in which margin positions can be changed.

As is well known, there are high-end typewriter devices that are equipped with high-performance document editing functions aimed at quick recovery from misinputs and flexibility in editing. This is called a word processor. However, in conventional word processors, when an LHM change is instructed from the keyboard, etc., a new message appears on the display screen of the display device.
LHM was set, but the print head position remained the same, so for the operator:
There were various operational inconveniences.

The present invention is a word processor in which the margin position can be changed, in which the margin position is changed by a margin changing means, and the printer head is automatically moved to the newly changed margin position in accordance with this margin position. This is intended to improve the operability of the word processor by showing the operator an image of the actual margin position.

The applicant is equipped with a one-line display device, and the operator corrects and edits the document while looking at the display screen, and when one line of data input is completed, the contents are automatically printed. proposed a relatively inexpensive and easy-to-use word processor (for example, Patent Application No. 51-124604).
(No. 51-126641). Below, this word
The content of the present invention will be explained in detail using the case of a processor as an example.

Hereinafter, the content of the present invention will be explained in detail with reference to the drawings.

FIG. 1 is a block diagram schematically showing the entire word processor system to which the present invention is applied. In the figure, 10 is a keyboard on which character/numeric keys, function keys, etc. are arranged, and key input information from the keyboard 10 is taken into the control section 30 via the keyboard interface and buffer section 20. . The control unit 30 decodes the key input information (code), and if it is a function code,
Corresponding control is performed, and if the data code is a data code, a part of the data code and function code may also be stored in the memory 40.
write to. The memory 40 has a storage capacity for one page of prints, for example. Of course, this is just an example, and the capacity of the memory 40 may be sufficient for several lines to be printed. In parallel with this key input operation, the control section 30 reads out one line of data from the memory 40 and supplies it to the display device 60, which has a display surface for one line, through the CRT drive and interface section 50 to display the data. conduct. The control unit 30 also monitors the type of data read from the memory 40 and the data display position of the display device 60, and detects codes such as carriage return (CR) and line feed (LF) as read data. Also, when the data display position enters the right hand margin (RHM), the data for that one line is output to the printer 80 via the printer interface section 70, and at the same time a print start signal is issued and the automatic Target 1
Prints a line of data. The memory 40 is connected to the floppy disk device 100 through a floppy disk interface 90, and when tabulation of, for example, several lines to one page, which is determined by its storage capacity, is completed, the contents of the memory 40 are transferred to the floppy disk device 100. Transferred to 100. Note that thick lines indicate data lines, and thin lines indicate control lines.

FIG. 2 is a detailed diagram of the control section 30.
In FIG. 2, 40 is a memory having a storage capacity of several lines or one page as explained in FIG.
This indicates that data is contained in the shaded area. The H point applied to the memory 40 is the memory address where the first data of the line to be displayed on the display device 60 is stored, the P point is the memory address where the next input data is stored, and the Q point is the memory address where the end code is stored. Each memory address is shown in the table below. 301 is an address register indicating the P point address of the memory 40, 302 is an address register indicating the Q point address, 303 is an address register indicating the H point address, and 304 is a working address register during data transfer. 305 is a print buffer that stores one line of data to be output to the printer 80; 306 is a display device 6;
This is a display buffer that stores one line of data displayed as 0. 307 is a format register group that specifies left and right hand margin positions, tab set positions, hot zones, blinking data display positions, cursor positions, margin mask positions, line tail positions, etc. The bit position of each register is determined by the display button. There is a one-to-one correspondence with the character position of the front 306. An address pointer 308 indicates the working address of the display buffer 306 and format register group 307.

309 is an LHM address register that stores the left hand margin (LHF) address; 31
0 when transferring data to the display device 60;
This is a space address register that stores the address on memory 40 of the space code that has entered the hot zone. Reference numeral 311 indicates an RHM address register that stores the address of the right hand margin (RHM). 312 is a data discrimination/control logic circuit that discriminates the type of data transferred from the memory 40 to the display buffer 306 and outputs various control signals. 313 to 316 and 330 are state flip-flops that are set by the output control signal of the data discrimination/control logic circuit 312, flip-flop 313 is the space (SP) in the hot zone, flip-flop 314 is the hyphen (-) in the hot zone, and 315 is the state flip-flop that is set by the output control signal of the data discrimination/control logic circuit 312. Carriage return (CR), 316 indicates presence or absence of line feed (LF), and 330 indicates presence or absence of LHM data code input. A status flip-flop 317 indicates whether the cursor is in the RHM, and a status flip-flop 318 indicates whether data to be transferred to the display buffer 306 remains in the memory 40. 319 is an arithmetic unit that changes the contents of the address register 301 by ±1; 32
0 is an arithmetic unit that adds 1 to the contents of address register 304, and 321 is address register 301 and 304.
322 is a comparison circuit that compares the contents of the working address register 304 and the space address register 310, 323
is a comparison circuit that compares the contents of the address pointer 308 and the RHM address register 311.

324 is a hyphen-on detection circuit that detects a hyphen-on code in data transferred to the print buffer 305; 325 is a multiplexer that switches and outputs data from the memory 40 or a CR code from an external source. 326 is a print start instruction circuit that detects the CR code and LF code from the output data of the multiplexer 325 and issues a print start signal; similarly, 327 is a print buffer 305
This is a print end instruction circuit that detects the CR code and LF code from the output data and issues a print end signal. 328 is a print buffer 305 according to instructions of a print start signal and a print end signal.
A printer output control circuit that controls data transfer between the printer 80 and the printer 80 is shown. 329 is an input that determines the key input code, divides it into data and function code, transfers part of the data and function code to memory 40, and outputs the function code to a desired location of the device as a control signal. This is a code establishment control circuit. 331 is a comparison circuit that compares the contents of address registers 301 and 303;
332 is an LHM buffer register that stores LHM data codes, and 333 is a conversion circuit that converts the numerical data in the LHM buffer register 332 into pure binary code.

Of the above configurations, 301 to 329 are the same as the word processor already proposed above, and 3
30 to 333 are newly added parts according to the present invention. First, the general operation of the word processor to which the present invention is applied will be explained in detail, and then the characteristic operation of the present invention will be explained.

FIG. 7 shows a flowchart for explaining the general operation of FIG. Now, assume that the memory 40 contains data in the shaded area as an initial state. As explained earlier, address register 3
01 stores the P point address of the memory 40,
Similarly, the address register 302 stores the Q point address, and the address register 303 stores the H point address. At this time, the contents of the memory 40 starting from the H point address are stored in the display buffer 306, which is taken into the display device 60 together with each piece of information in the format register group 307, and displayed on its display screen. . FIG. 6A shows an example of a format display, in which A represents the left hand margin, B represents the right hand margin, C represents the tab set position, D represents the range of the hot zone, and E represents the cursor.
Here, to set the left hand margin in and right hand margin in, the contents of the LHM address register 309 and the RHM address register 311 are moved to the address pointer 308, respectively, and the corresponding bit positions of the margin register 1 in the format register group 307 are set. An instruction is given by setting “1”. The tabs and hot zones 2 are similarly designated by setting "1" in the corresponding bit positions of the tab register 2 and hot zone register 3, but the necessary registers are omitted in FIG. As will be described later, when a match is detected in the comparison circuit 321, the cursor ho is designated by setting "1" in the corresponding bit position of the cursor register 5 indicated by the address pointer 308 at that time. Format register group 30
The contents of margin register 1, tab register 2, hot zone register 3, etc. in cursor register 5 remain unchanged even if the address pointer 308 is subsequently incremented sequentially, but bit “1” of cursor register 5 It shifts to the right in response to the forward movement and indicates the display position of the next input data. The line tail register 7 stores the current address pointer 30 when a line feed (LF) code is detected in block 312.
``1'' is set at the corresponding bit position indicated by 8. Since the point register 4 and the margin mask register 6 are not directly related to the subsequent explanation of the operation, their explanation will be omitted. Now, keyboard 10
When the key input code is determined to be data by the input code determination control circuit 329, the data is written to the P point address of the memory 40 specified by the address register 301. After that, the address register 301 is
+1 due to 19. Along with this key input operation, the display buffer 306 is rewritten. At this time, first, data transfer preparation processing is executed as follows. That is, when the H point address of the address register 303 is transferred to the working address register 304, the contents of the display buffer 306 up to that point are cleared. At the same time, LHM address register 30
9 is set in address pointer 308. Thereafter, the state of the LF display flip-flop 316 is checked, and if it has been reset, register 4 of the format register group 307 is checked.
~7 is cleared and flip-flop 313~3
18 and 330 are reset. On the other hand, LF
When the display flip-flop 316 is set, the address pointer 3 remains under the control of the data discrimination/control logic circuit 312 until "1" is detected in the line tail register 7 of the register group 307.
08 is incremented to align the address pointer 308 by line feed, and then
As in the case where the LE display flip-flop 316 is reset, the format register group 3
Clearing of registers 4-7 of 07 and resetting of flip-flops 313-318 and 330 are performed. This completes the data transfer preparation process, and the contents of the address in the memory 40 specified by the working address register 304 (i.e., H
The content of the point address) is read out and the display buffer 3 specified by the address pointer 308 is read out.
Written to address 06.

From this memory 40 to the display buffer 30
In parallel with the data transfer to 6, the transferred data is discriminated by the data discrimination/control logic circuit 312,
The following processing is performed depending on the type. That is, if the data is character, numeric, or symbol data, the address pointer 308 is incremented by 1 to prepare for the next data transfer. For space code,
Only when the hot zone is entered, the state flip-flop 313 is set, and the contents of the working address register 304 at that time are transferred to the space address register 310. Address pointer 308 is +1 regardless of whether it is inside or outside the hot zone.
be done. In the case of a hyphen code, the status flip-flop 314 is set only when the hot zone is entered. As with the space code, the address pointer 308 is incremented by 1 regardless of whether it is inside or outside the hot zone. In the case of a carriage return code, the status flip-flop 315 is set regardless of whether it is inside or outside the hot zone. Further, in this case, the address pointer 308 is not incremented. For line feed code, state flip-flop 31
6 is set, and at the same time, the bit of register 7 in the format register group 307 specified by the address pointer 308 at that time is set to "1". Address pointer 308 is not incremented.
Predetermined processing is similarly performed for other codes. Status flip-flop 317 connects address pointer 308 and RHM address register 31
The content of 1 is compared by the comparison circuit 323, and when the two match, it is set by a match signal from the comparison circuit 323. FIGS. 4 and 5 show these processes in a table. The operation when the left hand margin (LHM) key is pressed will be described later.

Note that the hot zone area can be detected by accessing and reading the hot zone designation register 3 in the format register group 307 using the address pointer 308, and checking whether the designated bit is set to "1". The readout signal from the hot zone designation register 3 is individually ANDed with the discrimination signal from the data discrimination/control logic circuit 312, and the state flip-flops 313 and 3 are respectively ANDed.
14 set input and a data latch signal to the space address register 310.

As described above, one piece of data is transferred from the memory 40 to the display buffer 306, and if the data is not an end code, the working address register 304 is incremented by 1 by the arithmetic unit 320. At this time, flip-flop 313~
317 remain in the reset state, the contents of the next address in the memory 40 specified by the address register 304 are read, and this is transferred to the address pointer 308 (which pointer has already been updated in the manner shown in FIG. is written to the address of the display buffer 306 specified by (already completed). While the state flip-flops 314-317 are being reset, this data transfer is repeated and the display buffer 306 is rewritten. During this time,
Comparison circuit 321 connects address registers 301 and 30
4 is compared, and if the contents of the two match, a match signal is sent out. This match signal sets state flip-flop 318. In other words, all data transfer from the memory 40 to the display buffer 306 is completed before the right hand margin is reached, and the transferred data does not include codes for carriage return, line feed, etc. , even if it contains a hyphen code, it means it is outside the hot zone.

When the state flip-flop 318 is set, the Q point address in the address register 302 is moved to the working address register 304,
The end code is read from memory 40. This end code is used by the data discrimination/control logic circuit 31.
2 is detected, the operation of transferring data from memory 40 to display buffer 306 is not executed until the next key input is performed. During this time, the contents of the display buffer 306 will continue to be displayed by the display device 60. This is the case when the end code is stored in the memory 40 in advance, but when the end code is not used, the data transfer operation from the memory 40 to the display buffer 306 is stopped due to the flip-flop 318 being set, and the next to accommodate key inputs. On the other hand, the match signal of the comparison circuit 321 is also given to the cursor register 5 of the format register group 307, and the address pointer 30 at that time is
"1" is set in the bit indicated by 8. In other words, this indicates the display position of the next key input data.

In this way, when the next key input is performed and it is data, the data is stored in the address register 3.
At the same time, the display buffer 306 is rewritten again in the same way as before, and the rewritten data is transferred to the display device 60 and displayed. An example of the display is shown in FIG. 6B.

FIG. 3 shows a specific example of the configuration of the data discrimination/control logic circuit 312. The data discrimination/control logic circuit 312 has the function of directly transferring the data read from the memory 40 to the display buffer 306, the function of discriminating the transferred data, and the function of incrementing the address pointer 308 based on the discrimination result. have. Block 601 is a section that outputs input data from memory 40 as is to display buffer 306 and at the same time discriminates the data, and is comprised of a so-called decoder matrix. This decoder matrix 601
The outputs of the space (SP), hyphen (-), carriage return (CR), line feed (LF), and left hand margin (LHM) detected in the state flip-flops 313 to 316 and 330 in FIG. This is a set input. 602 is a flip-flop, 603 is a clock pulse generator, and 604 is a ±1 circuit. ±
1 circuit 604 is the address pointer 308 in FIG.
connected to the decoder matrix 60
If a character, number, symbol, or left hand margin code is detected at 1, the address pointer is set to 3.
08 is +1, and when backspace (BSP) is detected, it is -1. Note that the strobe signal is issued every time one data transfer is performed, and the above-mentioned +1 or -1 is executed at the timing of generation of the strobe signal. When a tab is detected in decoder matrix 601, flip-flop 602 is set. As a result, the clock pulse generator 60
3 clock outputs are applied to the ±1 circuit, while address pointer 308 continues to increment. When the address pointer 308 advances and "1" is read from the tab register 2 of the format register group 307, the flip-flop 602
is reset, thereby stopping the sending of clock pulses, ie, the incrementing of address pointer 308. At this time, the address pointer 308 is pointing to the target tab position. Similarly, when state flip-flop 316 is set, address pointer 308 is incremented by clock pulse generator 603 and ±1 circuit 604 until a "1" is sent from line tail register 7 of format register group 307. done, “1”
When is sent, the step stops. That is, this is the process of positioning the address pointer 308 using the line feed described above. When a carriage return (CR), line feed (LF), half line feed (HLE), half reverse line feed (HRLF), margin release, or end code is detected in the decoder matrix 601, ±1 circuit 604 is detected. Prohibit operation. This corresponds to the table in FIG.

Returning to FIG. 2, it is assumed that the data input from the keyboard 10 and the data rewriting operation of the display buffer 306 based on this proceed, and that any one of the flip-flops 314 to 317 is set. In this case, if only the RHM display flip-flop 317 is set, it means that the right hand margin has been reached with no space in the hot zone, so the operator is alerted to the hyphenation and the key input is repeated. The device will be stopped until it is done. In other cases, the apparatus switches to print mode and print processing is automatically performed as follows.

First, the hyphen display flip-flop 314
The case where is set will be explained. As shown in FIG. 4, the flip-flop 314 is set when one line of key input advances to the hot zone and a hyphen is added for a line break. in this case,
The contents of that line are immediately printed out, and the display device 60 displays the key input data of the next line. The mechanism behind this is as follows. When the set state of the flip-flop 314 is detected, the H point address of the address register 303 is transferred to the working address register 304 again, and the contents of the address of the memory 40 indicated by the address register 304 are passed through the multiplexer 324 and transferred to the print buffer. 305. Writing to the print buffer 305 is performed at the timing of the input strobe. Note that data transfer to the display buffer 306 is prohibited in this print mode. After that, the working address register 304 is set to +1 by the arithmetic unit 320.
be done. This working address register 30
The contents of address register 301 are compared with the contents of address register 301 by comparison circuit 321, and data transfer to print buffer 305 is repeated until the two match.

When the address registers 301 and 304 match and the data transfer from the memory 40 to the print buffer 305 is completed, the hyphen on detection circuit 32
4 detects a hyphen code. Also, at this time, flip-flop 314 is in the set state. Therefore, the switching signal D is applied to the multiplexer 325. As a result, multiplexer 3
25 selects a preset carriage return code (CR code) and prints the print buffer 3.
Transfer to 05. In other words, the print buffer is 30
5, data for one line from point H to point P (point P is a point that moves each time a new key input is given) in the memory 40 is stored with a CR code added thereto. Thereafter, the contents of the working address register 304 at that time are transferred to the address register 303. That is, the new H
The point address is registered.

On the other hand, the CR code selected by the multiplexer 325 and transferred to the print buffer 305 is detected by the print start instruction circuit 326, and as a result, a print start signal is provided from the instruction circuit 326 to the printer output control circuit 328. When the printer output control circuit 328 receives the print start signal, it outputs the output strobe signal to the print buffer 3.
05, the data stored in the print buffer 305 is sequentially read out while checking the ready signal of the printer 80, and is output to the printer 80. In this way, when the last data, that is, the CR code is read out from the print buffer 305, the CR code is output to the printer 80 and simultaneously detected by the print end instruction circuit 327. A print end signal is given to printer output control circuit 328. Upon receiving this print end signal, the printer output control circuit 3
28 stops the output strobe to the print buffer 305, so that the print buffer 305
data reading is completed. During this time, printer 8
0 sequentially prints out data given through the print output control circuit 328, performs carriage return operation when a CR code is detected,
It prepares for the next printing line. That is, one line of data is transferred from the memory 40 to the print buffer 30.
5, the print operation for one line is thereafter performed under the control of the print output control circuit 328, independently of the display display operation. This is common to all subsequent print operations.

Next, state flip-flop 315 or 316
The case where is set will be explained. In this case as well, the contents of the address register 303 are transferred to the working address register 304, and the contents of the address in the memory 40 indicated by the address register 304 are transferred to the print buffer 305. After that, the address register 304 is incremented by 1, and data transfer from the memory 40 to the print buffer 305 is repeated in synchronization with the input strobe until the address registers 301 and 304 match, and when they match, the contents of the register 304 at that time are transferred to the address register. 303. These operations are the same as when state flip-flop 314 is set. The print operation starts when the CR code or LF code read from the memory 40 passes through the multiplexer 325 as it is, is detected by the print start instruction circuit 326, and a print start signal is issued to the printer output control circuit 328. be done.

Next, a case will be described in which state flip-flop 317 is set and flip-flop 313 is also set at this time. In other words, in this case, while printing out the data up to the space closest to the right hand margin (RHM),
Subsequent data will be newly displayed on the display device. Its operation is as follows. When the set state of state flip-flops 313 and 317 is detected, the contents of address register 303 are moved to working address register 304, as before;
The contents of the memory 40 address indicated by are transferred to the print buffer 305. After that, the working address register 304 is incremented by 1. At this time, the space address register 310 contains
The address on the space memory 40 closest to the RHM is stored. When the working address register 304 is incremented by 1, its contents are transferred to the space address register 310 by the comparison circuit 322.
is compared with the contents of the memory 4 until they match.
The data transfer from 0 to the print buffer 305 is repeated. Address registers 304 and 310
If they match, a match signal is output from the comparison circuit 322, and the data transfer to the space closest to the RHM is completed.At this time, the multiplexer 325 is switched by the match signal E, and the previous flip-flop 314 is set. alike
CR code will be added. When this CR code is detected by the print start circuit 326, the print operation is started. on the other hand,
Working address register 304 is arithmetic unit 3
20, it is incremented by 1 and its contents are stored in address register 3.
Newly registered on 03. Therefore, in the subsequent data transfer to the display buffer 306, the next data in the space closest to the RHM is read out, and the display buffer 306 is rewritten.

The general operation of the word processor targeted by the present invention has been described above. In such a word processor, the present invention simultaneously changes the LHM position of the display surface of the display device 60 by key operation, and simultaneously moves the print head of the printer 80 in response to this change, so that the print head of the printer 80 is always aligned with the print position of the printer 80. Set the character display position of the display device 60 to 1.
This is intended to correspond to 1:1. The operation of the present invention will be explained below.

FIG. 8 is a flowchart for explaining the operation of the present invention, and shows parts added to the flow of FIG. 7. To change the LHM position, use the LHM key provided on the keyboard to instruct the change.
This is accomplished by sequentially pressing the numeric keys to enter a numeric value indicating the new LHM position and the CR key. However, since changing the LHM position needs to be effective only when the cursor is at the line head, the input code determination control circuit 329
When the LHM key is pressed and the LHM code is detected, the comparison circuit 331 is activated, and when the P point address register 301 and the H point address register 303 match and a match signal is output from the comparison circuit 331, the LHM code and The subsequent numerical data and CR code are transferred to the memory 40. If the comparison circuit 331 does not detect a match, the LHM
Disable key operations. FIG. 8A shows this process.

Now, suppose that the cursor is located at the line head. When the LHM key is pressed at this time, the LHM code is written to the P point address of the memory 40 specified by the address register 301 (in this case, the P point matches the H point address), and the address register 301 is +1 be done. With this key input operation, the H point address of the address register 303 is transferred to the working address register 304, and the contents of the memory 40 specified by the H point address are transferred to the display buffer 306, but the H point address is Since it matches the P point address before the change, the LHM code just input is read out from the memory 40 and the address pointer 308
The data is written to the address of display buffer 306 specified by , that is, the line head address position. At this time, the address pointer 308 is +
1 and prepares for the next data transfer. This memory 4
0 to display buffer 306, data discrimination and control logic circuit 312 detects that the transferred data is an LHM code, and as a result, flip-flop 330 is set. Next, when numerical data indicating a new LHM position is entered using the numerical keys, the
It is written to the P point address in the memory 40, and the address register 301 is incremented by +1. After that, data transfer from the memory 40 to the display buffer 306 is started again, and the display buffer 306
The LHM code is at the line head address position of
Numerical data is entered at the next address location. FIG. 6C shows an example of the display on the display device 60 in this state. That is, "〓" is the LHM code, which is displayed at the line head position (LHM position), followed by the numerical data "15". At this time, LHM
is still in the state before the change (in the illustrated example, at the address position indicated by "10").

Next, when you press the CR key, the CR code is written to the memory 40 in the same way, and then the CR code is written to the memory 40 again.
0 to the display buffer 306 is performed. During this data transfer, the CR code is detected by the data discrimination/control logic circuit 312, and the flip-flop 315 is set.
When flip-flop 315 is set, since flip-flop 330 has already been set, the process shown in FIG. 8B is performed as follows. First, address register 3
The H point address of 03 is moved to the working address register 304, and the LHM buffer register 3 is transferred to the working address register 304.
32 is cleared. Thereafter, the address register 304 is incremented by 1, and the contents of the address of the memory 40 indicated by the address register 304, that is,
Numerical data following the LHM code is read.
This read numerical data is transferred to the LHM buffer register 332 on the condition that the flip-flop 330 is set and that it is not a CR code. Thereafter, the address register 304 is again incremented by 1, and the next numerical data is similarly transferred to the LHM buffer register 332.
That is, in the LHM buffer register 332,
Numerical data indicating the new LHM position to be changed is stored. This data transfer to the LHM buffer register 332 ends when the CR code following the numerical data is read from the memory 40 and detected by the data discrimination/control logic circuit 312.

When the CR code is detected by the data discrimination/control logic circuit 312, the flip-flop 315 is set, and under the conditions that the flip-flop 330 is set, the contents of the LHM buffer register 332 are input to the conversion circuit 333, and the contents of the LHM buffer register 332 are input to the conversion circuit 333. After being converted into a pure binary number by the circuit 333, it is stored in the LHM address register 309. Then, the contents of this LHM address register 309 are set in the address pointer 308, a new "1" is set at the LHM bit position indicated by the address pointer 308 of margin register 1 in the format register group 307, and the old LHM bit is will be reset. FIG. 6D shows an example of the display on the display device 60 at this time.
That is, in this example, the LHM buffer register 33
The numerical value "15" is stored in 2, indicating that the LHM display position has been changed from "10" to "15". Note that, as a matter of course, since the CR code has been detected, the cursor will be positioned on the new LHM display position.

Next, alignment of the print head in printer 80 will be explained. When the CR code is detected by the data discrimination/control logic circuit 312, the apparatus switches to print mode, the H point address of the address register 303 is moved to the working address register 304, and the LHM code of the memory 40, numerical data, The CR codes are sequentially transferred to the print buffer 305. When the CR code is detected by the print start instruction circuit 326 in this way, a print start signal is sent to the printer output control circuit 326.
28. At this time, the printer output control circuit 328 does not issue an output strobe to the print buffer 305 because the flip-flop 330 is set.
Prohibiting the read operation of the print buffer 305,
Instead, the contents of the LHM address register 309 are directly fetched, an LHM code is added to the beginning of the contents, and the LHM code is output to the printer 80. The printer 80 recognizes that the next data is data indicating a new LHM position based on the LHM code, changes the internal LHM to the address indicated by the data, and moves the print head to that position. FIG. 8C shows the processing flow.

As explained above, according to the present invention, since input data is printed line by line in response to a specific key input, it is possible to provide an inexpensive word processor that does not require a large display. When changing the margin position using a margin changing means in a word processor, the printer's head is automatically moved to the newly changed margin position, so the word processor operator can check the actual margin position in the printer. It becomes possible to concretely recognize the image of the image, and the operability is dramatically improved.

It should be noted that FIGS. 2 and 3 actually constitute a part of, for example, a microcomputer, and it goes without saying that the operation sequence of each part described so far is controlled by a program. FIG. 7 and FIG. 8 collectively represent the operation flow.

[Brief explanation of the drawing]

Fig. 1 is an overall configuration diagram of a word processor to which the present invention is applied, Fig. 2 is a diagram showing an embodiment of the control section of Fig. 1 to which the present invention is applied, and Fig. 3 is the data of Fig. 2. A specific configuration example of the discrimination/control logic circuit, FIGS. 4 and 5 are functional explanatory diagrams of the data discrimination/control logic circuit, FIG. 6 is a diagram showing a display example of a display device, and FIGS. 7 and 8. is a flowchart for explaining the operation of FIG. 10...keyboard, 30...control unit, 40...memory, 60...display device, 80...printer, 100...floppy disk, 301-304...memory address register, 305...print buffer , 306...
Display buffer, 307...Format register group, 308...Address pointer, 30
9... LHM address register, 310... Space address register, 311... RHM address register, 312... Data discrimination/control logic circuit, 313 to 318 and 330... Status flip-flop, 319, 320... Arithmetic unit, 32
1,322,323,331...comparison circuit, 32
4... Hyphen on detection circuit, 325... Multiplexer, 326... Print start instruction circuit, 32
7...Print end instruction circuit, 328...Printer output control circuit, 329...Input code determination control circuit, 332...LHM buffer register, 33
3... Conversion circuit.

Claims (1)

[Scope of Claims] 1. A word processor equipped with a keyboard for inputting data, a printing means for printing the input data, and a display means for displaying the input data, means for causing the printing means to start printing data input from a keyboard line by line in response to a specific key input; storage means for storing the position of the left hand margin; and storage means for storing the position of the new left hand margin. a left hand margin changing means for changing the position of the left hand margin stored in the storage means by inputting a value indicated by the left hand margin; and a left hand margin changing means for changing the position of the left hand margin stored in the storage means; A word processor characterized in that it is provided with means for automatically moving the word processor. 2. The word processor according to claim 1, wherein the specific key input code is a carriage return code. 3. The word processor according to claim 1 or 2, wherein the display means is capable of displaying one line of data.