SU652555A1 - Arrangement for information output from electronic computer - Google Patents

Description

in another, as well as the complexity of setting up a device caused by the need for HMjsTB, stable and accurate final levels of output voltages from a sawtooth generator, the most closely related to the invention is a device containing along each of the X and V coordinates code registers the lines whose inputs are connected to the control unit and the outputs to the corresponding beam deflection unit h. However, it also has a small amount of graphic information displayed, limited by the loss of time for setting the device circuit to its original state (reset) after writing each line, and the need to overwrite the input information about the coordinates of the line from one register to another at the end. writing each line, for which additional time is required, as well as low accuracy of the displayed lines, limited by a large number of accurate analog switches for one bit needed to connect the discharge resistor to one of four different voltages: either to one of two reference voltages ( + E, -E), or to one of the two sawtooth (-5T, - "- 5T). Thus, in known devices, it is necessary to set the circuit to the initial state after writing each line (to make a fault), as a result of which the capacitance of the sawtooth generator is discharged and the information about the coordinates of the line from one register to another is discharged. Additional time is required for resetting, as a result of which the useful time for the formation of lines is reduced. These losses of time are especially difficult when forming short lines, when they can be about half of the total yadra time. The consequence of this is a reduction in the total amount of displayed graphic information. The aim of the invention is to increase the device speed by eliminating time losses at the junction of the processes of terminating the formation of one line and starting the formation of another line by continuously forming a sequence of linearly varying voltages. In the proposed device, this is achieved by the fact that serially connected reference pulse generator, a frequency divider 6 55, -4 you, a reversible counter and a digital-analog converter, the outputs of which are connected to the beam deflection blocks in the X and Y coordinates, and series-connected elements are entered into it. OR, inputs, which are connected to the bus and to the output of the reversible counter connected to the electronic computer, trigger and each of the coordinates X and H switch, the input of which is connected to the output of the electronic-calculated the output machine to the corresponding registers of the line codes and to the inputs of the block. The control, the output of which is connected to the frequency divider, the input of the pulse generator is connected to the output of the OR element, and the inputs of the reversible counter are connected to the corresponding outputs of the trigger. FIG. 1 shows a block diagram of the proposed device; in fig. 2 - time diagram of his work. The device contains registers of 1 and 2 codes of lines on the coordinate Ч and registers 3 and 4 of codes of lines on the coordinate Y, intended for recording the final coordinates of the line. Registers 1, 2 and 3, 4 are connected to computer 5 via switches 6 and 7. respectively, which serve to switch the input information either to registers 1 and 3 of the even-numbered line code, or to registers 2 and 4 via a control signal from the trigger output 8, connected to the Start-up bus from the computer 5 via an OR element 9. The outputs of registers 1, 2 and 3, 4 are connected to the inputs of blocks 10 and 11 of the beam deflection by the X coordinate or by the Y coordinate, respectively, where the deflection voltages are formed. The KOMMyTBtopoB 6 and 7 outputs are connected to the input of the control unit 12. A reference pulse generator 13 connected to the OR 9 output is connected to the frequency divider 14, which is connected to the control unit 12. The output of the frequency divider 14 is connected to a reversible counter 15, control inputs which are connected to the outputs of the trigger 8, one of the outputs - to the computer, 5- (Kochan line bus} and to the second input of the element OR 9, and the other code to the digital-to-analog converter 16, the inverse outputs of which are connected to the beam deflection blocks 10 and 11 X and Y coordinates. Registers 1, 2, 3 and 4 line codes are used to write the final coordinates of the forming lines. The computer 5 outputs the final coordinates of the lines as a binary code. The switches 6 and 7 are used to switch the input information when it is written to the corresponding code register (when forming an even or odd line). Trigger 8 is provided for controlling switches and a reversible counter, an OR 9 element for assembling Start and End line signals, blocks 10 and 11 for generating deflection voltages, a control unit 12 for calculating the line length with and its final coordinates, the reference pulse generator 13 for sequencing the pulse frequency divider 14 - for dividing the frequency of the reference pulses by the division factor determined by control unit 12, the reversible counter 15 - for counting the reference pulses in the forward or reverse direction, -user-x with a frequency divider 14. The counting direction is determined by the state of the trigger 8. The digital converter 16 is designed to form on its inverse outputs a linearly and linearly decreasing nsnr a voltage between two end levels of. The computer 5 during successive time intervals (see FIG. 2) draws in the form of a parallel binary code the final coordinates of the lines that are to be displayed on the screen. At the same time, from the computer 5 a signal passing through the bus is started through the element OR 9, arrives at the trigger 8, which is set to write the first (odd) line so that the switches 6 and 7 pass the input information to the code registers 2 and 4 of the odd line . The block 1O and 11 thereby form deflection voltages for writing the first line. In addition, the same input information is supplied to the control unit 12, where the functions .. / lCh / de, 7 / dx / / dh /, X v con, k.on are the final coordinates of the generated line; XII ./ Kon end coordinates of the previous line; / lX /, / lU / modulus of the difference between the final coordinate of the generated line and the final coordinate of the heading line; DE is the length of the generated line. The control unit 12 generates information about the length of the line in the form of a division factor, proportional to the length of PMNI, to the frequency divider 14, to which signals are received from the reference pulse generator 13. The reference pulse generator 13 begins to work on the sirnal ;: from the computer 5 through the element OR 9. The pulse sequence of the corresponding frequency, determined by frequency divider 14, is fed to the reversible counter 15, which starts counting in the forward direction, since the resolution to the count is fed to one of the control x inputs a corresponding arm trigger 8. In the process of counting down counter 15 to the forward output of DAC 16 is formed stepwise increasing voltage, and the inverse output generated stupenchoto ubyvayui1ee voltage level from one end to the other. Information from registers 1 and 3 of the even codes and registers 2 and 4 of the codes of odd lines goes to blocks 10 and 11, which are also supplied with stepwise variable voltages from the digital-to-analog converter 16. Beams 10 and 11 are in the X and Y coordinates identical t each contains, for example, a digital-to-analog converter (code-current or code-voltage), which includes analog switches. The analog switches in accordance with the code of the unequal coordinate of the line are connected to the corresponding resistors that are binary and bounded to step-varying voltages from the digital-to-analog converter 16. As a result, at the output of the bus of the blocks 10 and 11, the beam deviates along the X and Y coordinates an output deflection signal appears, intended to control the actuator. When the reversing counter 15 is completely filled, a signal is produced. The end of the line, which enters the computer 5, to determine information about the next (even) line. In addition, the signal The end of the line, the passage through the element OR 9, flips trigger 8. The device’s operation when writing the next (even) line is no different from the described ryshb with the only difference that now the input information from the even lines from the computer 5 is received switches 6 and 7 are written to code registers 1 and 3 of the even line. The control unit 12 outputs the corresponding division ratio value proportional to the length of the even-numbered line. Since the trigger 8 takes on another state, the control inputs of the reversible counter 15 have permission for the subtraction operation, and the reversible counter 15 starts counting in the opposite direction; at the same time, a stepwise decreasing voltage is formed at the forward output of the digital-to-analogue converter 16, and a stepwise increasing information is generated at the inverse one. The information about the final coordinates of the even line coming from registers 1, 2, 3 and 4 to blocks 10 and 11 is controlled by analog-to-analogue converters, located in these blocks, which are also supplied with stepwise varying voltages from the digital-to-analog converter 16. As a result, the output of blocks 10 and 11 forms deflection voltages for writing an even line.

The degree of approximation of stepped rising and falling voltages from the digital-to-analog converter 16 is determined by the number of bits of the reversible counter 15, and hence the digital-analog converter 16. For almost the full realization of the stepped voltages, a reverse counter and a digital-analog converter by eight bits are enough.

The proposed device allows to increase the total amount of displayed graphical information by eliminating time losses for resetting and initial installation when forming smoothly varying voltages (there is no reset and initial installation), as well as eliminating overwriting the input

eight

connected to the bus and to the output of a reversible counter connected to the electronic computing machine, a trigger and each of the X and Y coordinates of a switch whose input is connected to the output of the electronic computer, and to the corresponding registers of the line codes and to the inputs of the control unit , the output of which is connected to the delimiting frequency, the input of the pulse generator is connected to the output of the OR element, and the inputs of the reversible counter are connected to the corresponding trigger outputs.

Sources of information taken into account in the examination

1. The patent of Germany No. 1549907, cl. G 06 K 15/20, 1975.

2. US Patent No. 332О409, cl. 235-151, 1967.

Claims (1)

3. US patent number 3638214, cl. 34O-324, 1972. information about the coordinates of a line from one register to another. The absence of a sawtooth-shaped generator with stable finite levels simplifies device setup. Claims of the invention A device for outputting information from a computer,. each of the X and Y coordinates contains registers of line codes whose inputs are connected to the control unit, and the outputs to the corresponding beam deflection unit, which, in order to improve the speed of the device, has been connected to it in series connected reference pulse generator, a frequency divider, a reversible counter, and a digital-to-analog converter, the outputs of which are connected to the beam deflection blocks in the X and Y coordinates and the OR connected in series, whose inputs M eight Pusn IS P No  i i j " t / J iLusk is a tnonec. JtUHUtt) VinoZ cfemtioiff mpvtte a ppppp You f cytmona / tfffefffte npffSpajfiamejrjf / tettffffn af MMf etnal jntHUfl HeveffTMaif WU9