JPH0217530A - Electronic computer - Google Patents

Abstract

PURPOSE:To widen an applied range by providing an output means to a printer and contracting or expanding a text picture and printing it. CONSTITUTION:A printer 6 connected to an electronic computer has contracting and expanding functions and has the emulation function and printing function of a serial printer. The electronic computer provides a CRT displaying part 1, a keyboard 2 to give an instruction, an input buffer 3, a central processing unit (CPU) 4, an output buffer 5, an internal memory 8, etc. In the internal memory 8, a scale factor 11 of contraction and expansion and a classification 12 of the picture printing are set. For the scale factor 11, a utility program is activated by a floppy disk driving 7, the standard and scale factor displayed at the picture are instructed by the keyboard 2 and can be rewritten. Thus, the contracting and expanding printing can be executed including a text picture.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electronic computer whose functions are extended to external printing equipment.

[Prior Art] In conventional general electronic computers, interpreted language processors have a text screen for displaying characters and a graphics screen for displaying graphics, and a display device has a superimposed display of these. It was displayed. If the data on the screen was only a text screen, it was output to an external printing device such as a printer in character code, and if it was only a graphic screen or both a text screen and a graphic screen, it was output to the printer in dot rows.

[Problem to be Solved by the Invention] However, when outputting text screen data to a printer, only character codes are output, so it is not possible to reduce or enlarge a character string of a certain shape. It was impossible.

[Means for Solving the Problem] In order to solve the problem, the present invention provides a command means for reducing or enlarging character and graphic data displayed on a screen based on an interpreted language, and a command means based on the command means. The apparatus is characterized in that it includes at least a storage means for outputting character and graphic data to an external printing device.

[Effect]

By having a means of outputting to a printer as described above,
The present invention enables reduction and enlargement printing including text screens.

[Example] Hereinafter, an example of the present invention will be described based on the drawings. The printer connected to the computer of the present invention has reduction and enlargement functions, and a page printer having a serial printer emulation function and a function capable of printing 10.5-point and 12-point Kanji characters, for example, is used as an example. Make it.

FIG. 1 is a block diagram showing the entire electronic computer according to the present invention, in which 1 is a CRT display, 2 is a keyboard for giving commands, 3 is a large-capacity buffer, 4 is a central control unit (CPU) operated by an interpreter, and 5 is an output buffer for connecting an external printing device such as a printer, 6 is a printer, 7
8 indicates a floppy disk drive (FDD), and 8 indicates an internal memory. The reduction/enlargement magnification (11) and screen printing type (12) are set in this internal memory.

The reduction/enlargement magnification (11) is, for example, 0, 1°2, 3
．． 4 is memorized, respectively standard and 1/3, 2/3. 3/3
, showing a magnification of 4/3. Standard means that the screen is printed in serial printer emulation mode. Although it depends on the reduction/enlargement performance of the printer connected to the computer of the present invention, it is not limited to this numerical sequence. The reduction/enlargement magnification (11) can be rewritten by activating the utility program on the FDD 7, instructing and determining the standard or magnification displayed on the screen using the keyboard 2.

In addition, the types of screen printing are, for example, l, 2. 3, respectively representing printing of only a text screen, printing of only a graphic screen, and printing of both a text screen and a graphic screen. The type of screen printing is set when the screen printing key on the keyboard (2) of the computer is pressed or when the interpreter interprets a command instructing screen printing.

The process of printing only a text screen will be specifically explained below.

FIG. 2 shows in a flowchart the main flow of the screen printing program, which is controlled when the screen printing key on the computer keyboard is pressed or when the interpreter interprets a command instructing screen printing. First, it is determined whether the screen printing is standard printing or not based on the reduction/enlargement magnification (11) of the internal memory (21). If it is standard printing (Yes), the printer prints in serial printer mode. If it is not standard printing (No), it is determined whether the printing type is text screen only printing based on the screen printing type (12) in the internal memory (22).

If the print type is text screen only (Yes),
Branch to the text screen printing routine described below. If the print type is not only text screen (NO)
If so, the process proceeds to a decision block for double-sided printing of only the graphic screen and screen printing of the text screen and the graphic screen, which are unrelated to the present invention.

Figure 3 shows the main flow of the text screen printing routine. Based on the internal memory reduction/enlargement magnification (11), it is determined whether the magnification is 1/3 (31). /3 (Yes), branch to the dot row printing routine.

If the magnification is not 1/3 (No), determine whether the magnification is 2/3 (32); if the magnification is 2/3 (Yes), branch to the dot row printing routine. If the 0 magnification is not 2/3 (No), it is determined to be 3/3 or 3/4 and the process branches to the character string printing routine.

In the dot row printing routine, the characters displayed on the screen are output to the printer as dots and printed. Also, the string print routine outputs the character code to the printer,
Print using the printer's character fonts of several sizes.

Control is passed to the dot row printing routine in Figure 4 when the character font pattern corresponding to the specified reduction or enlargement ratio does not exist on the printer side. be judged.

Referring to the dot string printing routine in Figure 4, first, the printer is instructed to use it as a page printer (41), then the font of the characters displayed on the screen from the top left to the bottom right is determined. It is output to the printer together with the print position (42).

Here, the basic character pattern generated from the CG on the main body side and the reduction/enlargement magnification are sent to the printer. Finally, instruct the printer to break a page (43) and return the printer to its default state (when the printer was turned on) (
44).

Referring to the character string printing routine in FIG. 5, first, the printer is instructed to print in serial printer mode (51). Based on the internal memory reduction/enlargement magnification (11), determine whether the magnification is 3/3 or not (5
2). If the magnification is 3/3 (Yes), then 1
Instructs the printer to use 0.5 point characters (53). If the magnification is not 3/3 (N o ), it is determined to be 4/3 and the printer is instructed to use 12 point characters (54). Next, the code of the characters displayed on the screen from the upper left to the lower right is output to the printer (55). At this time, a line feed is instructed to the printer for each line. Finally, a page break is instructed to the printer 56), and the printer is returned to its default state (when the printer is turned on) (57).

〔Effect of the invention〕

Since it is possible to reduce or enlarge the text screen and print it, which was not possible before, it has a wide range of applications as an electronic computer that can change the shape of the characters depending on the purpose of the other user.

[Brief explanation of the drawing]

FIG. 1 is an overall block diagram according to the present invention. FIG. 2, FIG. 3, FIG. 4, and FIG. 5 are diagrams each showing a flowchart of processing related to the present invention. : CRT display: Keyboard: Input buffer: Central control unit (CPU): Output buffer: Printer: Floppy disk drive (FDD): Internal memory: Reduction/enlargement magnification Types of dual-screen printing and above Applicant: Seiko Epson Corporation Representative Patent attorney Kizobe Suzuki and 1 other person Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] In an electronic computer operated by a processor processed in an interpreted language, a command means for reducing or enlarging character and graphic data displayed on a screen based on the interpreted language, and the character and graphic data based on the command means. An electronic computer comprising at least storage means for outputting the information to an external printing device.