SU682891A1 - Data display apparatus - Google Patents

Description

The invention relates to automation and computing, in particular to indicator devices, and is intended to represent information in the form of numbers, letters and characters.

A device for displaying information is known comprising an input unit, an address generation unit, a code converter and a group of display elements 1.

A disadvantage of the known device is a large complexity. As each display element contains a memory device.

The closest to the invention is a device for displaying information containing an input unit, the input of which is connected to the device's input, a code converter, the input of which is connected to the first output of the input unit, an address generation unit, the first group of elements AND whose inputs are connected to the corresponding outputs an address generation unit, a constant level signal sensor, a variable level signal sensor, a second group of elements AND whose first inputs are connected to a sensor output of a constant level signal, s OR, the first inputs of which are connected to the corresponding outputs of elements AND of the second group, and the second inputs - with the output of the variable level signal sensor, and a group of display elements, the corresponding inputs of which are connected to the corresponding outputs of the code converter, the outputs of the corresponding elements of the first group and to the outputs corresponding elements OR.

A disadvantage of the known device is the low speed due to the delay of the control signals due to the loggings and the significant information correction time, since it is necessary to determine the coordinates of the indicator to which the information is stored with the error, and retype the address code of this indicator. In addition, the known device has a great deal of difficulty, since each indicator contains ignition chains consisting of diodes, a resistor and a capacitor, and there are a large number of connections between the indicators and the address generation unit.

The aim of the invention is to increase the speed and simplify the device.

The goal is achieved by the fact that the device contains the third group of I elements, the first inputs of which are connected to the outputs of the corresponding elements AND of the first group, the second inputs to the second output of the input block, and the outputs to the second inputs of the corresponding AND elements of the second group, trigger, first input which is connected to the second output of the input block, and the second input through the differentiating element - to the third output of the input block, to the element I, the output of which is connected to the input of the address generation unit, the first input - with the output, hera, and the second input - with g We output the input unit, the fourth output of which is connected to the control input of the constant level signal sensor.

The drawing shows a functional diagram of the device on which are presented (input block 1, converter 2 codes,; block 5. forming address, element 4, differentiating element 5, trigger 6, group of elements 7 of display, first group of elements 8, second group -p of elements And 9, a third of the units of elements And W, sensor // signal of a constant level, elements OR 12 and sensor 13 of a signal of variable level.

The operation of the device is as follows.

In the initial state, the signals from the address generation unit 3 and the 2 code converter are missing the display elements 7 are not illuminated. The output of trigger 6 sends a signal to element 4. From the block / input, signals “Return and“ Erase are not received, and c (OUTPUT of elements of PI 10 of the third group have no signals, signal from the sensor // constant level through the elements of the second group and elements OR 12 goes to the display elements 7. The signal from the sensor / variable level signal through the elements OR 12 also goes to the display elements 7.

With the arrival of information at the input of the device from the unit / s: water receives the signal "Address through the element I 4 to the input of the unit 3 formating the address, from the outputs of which the voltage is applied to the first row and the first column. At the output of the AND element of the first group, which is located on the cross section of these buses, a signal arrives at the input of the corresponding AND element of the third group and the display element. There is no signal at the output of this element AND of the third group, since the signal "Return from the block / gadget to the second input of this element is not received, and the state of the corresponding element AND of the second group does not change. The elements of the indicator | Cs remain in a non-conducting state, since their inputs do not receive signals from the code converter.

After the signal, the Address is input from the block / input signal to the input of the 2 code converter, where it is converted into a graphic one, corresponding to the shape of the postmark. From the outputs of the code converter, the graphic code signals arrive at the corresponding display elements. .However, only those Hitlications that are addressed to address signals are clogged. Differential element 5 selects the leading edge of the signal, Address, which is fed to the input of trigger 6, but the state of trigger 6 does not change. Similarly, information is entered into other groups of display elements.

When entering sensitive information

from the block / input, the signal “Return to the trigger input 6 and the inputs of the AND elements of the third group is received. The trigger state 6 is changed to opposite position. When the signal "Return signal" Address from the block /

no input is received. Although the signal "Return comes to the inputs of all elements AND of the third group, a sitnal appears at the output of only one element PI, which is in the group to which

Signals "Address from the address generation unit 3, and to which the security information was transmitted. To the second input of the element AND iB this group receives a signal from the output of the corresponding element And 9 first

groups. The signal from the output of the element And 10 of the third group is fed to the input of the corresponding element And the second group, and the signal from the output of the element And the second group is not received and the corresponding OR 12 and the elements 7 of the display. . At the moment when the signal coming through the corresponding element OR 12 from the output of the variable level source 13 on the display elements 7 becomes equal to the direction of extinction of the display elements, they will go out and the voltage of the half-wave voltage will not light up on arrival.

Upon receipt of the following information at the input of the signal, the signal “Return

from the output of the input block is absent, and the signal "Address does not flow to the address generation block, because there is no signal from the output of trigger 6 at the second input of element 4". Since the state of the address generation block has not changed, the graphic signal from output 2 of the code converter lights the elements of the display in the group in which the information has been entered. The leading edge of the signal "Adrei. Is highlighted by differentiating element 5 and changes the state of flip-flop 6, and the signal from its output goes to the second (INPUT element 4.) With the input of the input block of the next information, the signal

The address transfers the address generation unit to the next state, and the information will be entered into the next group of display elements.

For simultaneous erasing of information in all groups of display elements from the input unit, the signal “Erase. The signal at the output of the constant level sensor 11 becomes different to zero, and the display elements in all the groups go out. Od