SU1259273A2 - Information output device - Google Patents

Abstract

The invention relates to computing, can be used to output information from a computer, and is an improvement of the device along. No. 1180876. The purpose of the invention is to expand ... the application area of the device by printing information, is achieved by introducing a second register, a fifth group of AND elements, a third trigger, a third counter, a sixth group of AND elements, a fourth trigger, and a group of AND elements With, that in aggregate provides for printing. 1 il.

Description

one

The invention relates to computing; It can be used to report information from a computer, and it is an improvement to the auth device of st. No. 1180876.

The purpose of the invention is to expand the field of application of the device due to the introduction of print information.

The drawing shows a block diagram of the device.

The device contains a control unit 1, an exchange unit 2, a memory unit 3, a first counter 4, a second counter 5, a display unit 6, a first register 7, a first group of elements AND 8, a first group of elements P1LI, 9 a second 10 and a third P group of elements And, the first trigger 12, block 13 registers, the first element OR 1 is the fourth group of elements AND 15, the driver of 16 pulses, the second element OR 17, the first inverter 18, the second trigger 19, the second register 20, the fifth group of elements AND 21, the third trigger 22, the third counter 23, the sixth group of elements And 24, the fourth trigger 25 and; element And 2

The device works as follows.

The information displayed in block 6, for example, on a CRT screen, is recorded in memory block 3 and control block 1. In the process of displaying, sequential (one after the other) reading of words from memory block 3 is performed using the first counter 4, which through the second group of elements AND 10, the first group of elements OR 9 and the first group of elements And 8 is connected via register 7 to block 3 of memory ti at certain points in time. In the process of selection, the first counter 4 takes values from the address code of the first receipt in memory block 3, where the first word of the system is written and from which it starts the display cycle to the code of the address of the last cell, into which the last word from the array of words to be displayed is written. To learn how from the 3 rd word block and their subsequent processing, the control block 1 generates the control signals distributed in time

ly,

for example, signal Read, (with

counting

word), connecting the second counter 4 to the memory block 3, counting down the time for processing the read cycle

s

block 3, memory signals for rewriting the contents of the cell into block 13 of registers, then into block 1 of control, where the type of the word read (coordinate, signed, end of array) recorded in the character part of the word (for example, in the first bits ) and, depending on this, its information part is processed for further input into display unit 6. After reading the last word of the array from block 3 of the memory and processing it using program signals: The end of the array is set to the initial state O of counter 4 and the image forming cycle is repeated, x To ensure a stable image, for example, on a CRT screen

0, it is necessary to regenerate the information recorded in memory block 3 at a frequency of about 50 Hz and not to interrupt the display cycle for the duration of the exchange. The exchange of information5 with a computer is performed using a block

2 exchange and driver 16 pulses

Information from the exchange register of the exchange unit 2 is entered into the memory unit 3 by means of a pulse generator 16 and a counter 5 for storing the current address of the cell into which the information is recorded. In the exchange process, the output of the counter 5 at certain points in time is connected through the third group-. And 11, the first group of elements OR 9, the first group of elements AND B and the register 7 to the memory block 3, the information recorded in the exchange register of the exchange block 2 is rewritten into the input register of the register 13 block and then entered into

3 memory lines to write to a cell whose address is currently recorded in the counter 5.

At the time of the exchange cycles, the display register register 13 contains a word (read before the start of this exchange cycle), which is processed by control block 1 for creating an image in display block 6. In order to ensure continuous display of information during the exchange cycles, the access to the memory block 3 to read a word to be displayed is performed without delay with a priority before accessing the memory block 3 to write

0

five

0

45

50

55

words obtained in the process of receiving information from the computer.

Thus, the device provides at the same time with the exchange cycle the display of information in block 6, the display mode will take precedence over the exchange mode when accessing the memory block 3. At the time of counting from cjjoBa memory block 3, for displaying and writing it to the display register of register block 13, from the fifth output of control block 1, a signal is generated that activates trigger 12, resulting in counter code 4 through the second group of elements OR 9 arrives at the information input of the first group of elements AND 8, to the control input of which through the first element OR 14 receives a signal from the second output of the control unit 1. As a result, register 7 will record the address of the cell from which information is read for display.

Before reading the word to be displayed, the fourth output of control unit 1 receives a signal to activate trigger 19, which from this moment on prohibits the exchange cycle, i.e. if, after switching on trigger 19, the start of the exchange cycle signal arrives, it is remembered in the former 16 pulses, without starting the exchange cycle. After the end of the reading of the new word to display the record, it is sent to the display register of the block 13 of registers from the sixth and eighth outputs of the control block 1. installation in О, respectively, of the trigger 12 (| dp connection to the register 7 of the counter 5)) and the trigger 19 / (l. times the decision of the exchange). Before the next access to memory block 3 to read the next word to be displayed in the time required for the complete (one-word) exchange cycle, the signal from the fourth output of control unit 1 again triggers trigger 19. If the exchange cycle started before this point, Then, at the beginning of the access to the memory block 3 for the word for the address, it has already ended. If the signal for the beginning of the next cycle of the exchange arrives after blocking the driver 16 pulses, then it is memorized.

2592734

and the start of the exchange cycle occurs immediately after the resetting of the trigger 19.

Each display cycle is completed with the processing of the last word of the array — by the signals of the End of the program program that is decoded by the decoder of the control unit 1. These signals, separated by time, use 10 for conducting information reading from memory block 3 to register 20 for output, for example, to an external documentation device. After switching on T5

20

25

0

five

0

five

0

In the end of the array, the signal from the ninth output of control block I arrives at interrogating element I 26 and, in the case of a permitting signal at the first input (the external device is ready to receive a word from memory block 3), sets trigger 1 to 25. The following program signals In this case, the end of the array passes through the group of elements 24 and sequentially one after another activates the external device into the information receiving mode, activates the trigger 22 dp connected to the first group of elements 8 of the third counter code 23, then writing this code to the first register 7 and entering into the memory block 3 of the signal Read. The time required for reading information and its occurrence at the output of memory block 3, a signal from the fifth output of a group of elements And 24, record it to the second register 20 and enter it into an external device. The signal from the sixth output of the And 24 group of elements is set in the third trigger O and CHI from the control unit 1 and installed in the fourth trigger 25, the program is run. The end of the array ends and a new information display cycle begins. At the end of the next cycle, the display of information into the device reads the next word from memory 3, and so on.

If the external device did not manage to process the entered information during the display cycle, it does not enter the first control signal (readiness to receive) into the device, and in this case the information from memory block 3 to the external device will not be read in this frame.

I 1

After the end of the output to the external device of all the relevant information from the memory block 3, the external device sets the third counter 23 to the initial state by a signal through the second control input of the device.

Thus, the introduction of new blocks and links into the device ensures the possibility of outputting information from the memory block to an external, for example, documenting device, without interrupting the display cycle, which is a significant technical advantage and allows us to expand the field of application of the device. .

Claims (1)

Invention Formula The device for displaying information on bus No. 1180876, is designed so that, in order to expand the scope of application due to the output of information for printing, a second register is entered into it, the first group of elements AND , the third trigger, the third counter, the pole is a group of elements AND, the fourth trigger and the element AND, whose first input is the first control input of the device, the second input is connected to the ninth output of the control unit, and 592736 the output is connected to the installation input to the fourth flip-flop, the installation input to O of which is connected to the tenth output of the control unit, a. 5 output - with the first input of elements And the sixth group, the second input of which is connected to the eleventh output of the control unit, the first output is the control output of the device, 10 the second output is connected to the installation input of 1 trigger, the third output with the third input of the first element OR, the fourth output - with the input. Reading the memory block, information {5 input and output of which is connected to the information input of the second register, the output of which is the information input of the device, and the control input connected to the fifth output of the elements of the fifth group, the sixth output of which is connected to the installation input of the O and the trigger to the counting input of the third counter, the setup input of which is the second. 25 by the control input of the device, and the output is connected to the first input of elements AND of the fifth group, the output of which is connected to the third input of the elements OR of the first group, and the second input - 3Q to the non-inverting output of the third trigger, which inverts the output of which is connected to the third inputs of the elements And the second and the third group. -g ..- J "..,." p. ™, I J I- 7 N 8 M 9  -.i..a ". ,, -. U. flail . WU Editor H, Yatsola Compiler and Alekseev Tehred i.Popovnch Order 5123/47 Circulation 671 Subscription VNI Pta State Committee of the USSR for inventions and discoveries 113035, Moscow, Raushsk nab ,, d. 4/5. Production and printing company, Go Uzhgorod, st. Project, 4 Proofreader A.Zimokosov