SU517912A1 - Display device - Google Patents

Description

The invention relates to automation and computing and can be used as a bulletin board for indicators of the difference between a plan and a fact.

A device for indicating is known, which contains the first trigger, whose inputs are connected via AND-NOT elements to the pulse sensors and the AND element, and outputs to the sign indication unit and to the AND group of elements connected through OR-NOT elements display figures connected to the element "I. The known device is characterized by unreliable operation of slow-acting electromechanical elements.

In order to improve the reliability of the device, it contains the second and third triggers, one-shot and additional elements "AND-NOT, the first input of the first element" AND connected to the direct output of the second trigger, the second input with the inverse output of the third trigger, and the output with the first one-shot, connected in series with the first element “IE and the second one-shot, the output of which is connected to the first input of the second trigger and through the second element“ NOT to one of the inputs of the “And” elements, the second input of the second trigger connect ene with a pulse sensor.

The drawing shows the described device and the designations of the signs: 1 - block of indication of numbers; 2, 3, 4, 5, 6, 7 and 8 - elements 9 and 10 - elements "AND-NOT; 11 sign display unit; 12 and 13 - triggers; 14 - the trigger sign; 15, 16, 17 and 18 - one-shot; 19, 20, 21 and 22 - elements 23, 24 and 25 - the elements “OR NOT; 26 and 27 pulse sensors.

In the initial state, the display unit of digits 1 is set to "zero by the signal at the setup input, at its outputs are set to" units (the device operation is considered using the example of two reverse decades), which through the elements "And 2 allow the passage of pulses through the elements

"AND-NO 9 and 10 and control the display unit of the sign 11, prohibiting the indication" Advance and "Backlog and numbers. The inscription "Norm." The pulses from the pulse sensor 26 arrive at one of the inputs of the trigger 12, set “one at the direct output, allowing the pulse from the pulse sensor 26 to pass through the“ I 3 ”element and prohibit the pulse from the pulse sensor 27

through the element "AND 6, as well as through the element" AND-HE 9, at the second input of which "the unit sets the sign trigger 14 to the state" unit at the forward output, which prepares the display unit 11 of the symbol to

highlighting the message "Backlog, and allows the pulse to pass through the elements" And 4 and 5. At the same time, the pulse from the pulse sensor 26 through the element "And 3 starts the one-shot 15, by the end of which the one-shot 16 starts up, which forms a delayed pulse. By the end of the operation of the one-shot 16 pulse from its output, the trigger 12 is set to the "zero state at the forward output (" one - at the inverse output).

Thus, the trigger 12 is prepared to receive the next pulse and to pass the pulses from the sensor 27.

The delayed and generated pulse from the pulse sensor 26 through the element “NOT 20 is fed to the inputs of the elements“ AND 4 and 7, but passes only through the element “AND 4, at the second input of which is set“ one from the direct output of the sign trigger 14 (“zero with indental output prohibits the passage of a pulse through the element "And 7). From the output of the element "AND 4, the pulse arrives at the input of the element" OR-NOT 23, from the output of which it enters the input of the element "OR-NOT 24, from the output of which goes to the counting input and the input of the adding mode of the display unit of digits 1, which with these signals at the inputs works in the mode of addition. The output of the display unit of numbers 1 is set to "zero, which through the element" And 2 prohibits the passage of the following pulses from the sensors of pulses 26 and 27 through the elements "AND-HE 9 and 10, and also removes the prohibition from the display unit of the sign I. The figure is highlighted “1 and the inscription“ Backlog, since the trigger of sign 14 had previously been prepared with the indication “Backlog.

The pulse arrives from the pulse sensor 27, the circuit works in a similar way with the only difference that the pulse through the elements “AND 5,” OR-NOT 25 and 24 goes to the counting input and the input of the subtraction mode

number display 1. This unit operates in subtraction mode. On the digital display the inscription "The norm and indication is prohibited. On the next arrival of the impulse with

Pulse sensor 27 Digit 1 display unit operates in subtraction mode. The number “1” and the inscription “Advance.

Claims (1)

Invention Formula A display device containing the first trigger, the inputs of which are connected via AND-NOT elements to the sensors, pulses and the AND element, and the outputs to the sign indication unit and to the AND group of elements connected through OR-NOT elements a digit indication unit connected to the AND element, characterized in that, in order to increase the reliability of the device, it contains second and third triggers, one-shot and additional AND-NOT elements, the first input of the first AND element connected to the direct output second trigger the second input - with the inverse output of the third trigger, and the output - with the first one-shot, connected in series with the first element "NOT and the second one-shot, the output of which is connected to the first input the second trigger and through the second element "NOT to one of the inputs of the group of elements" And, the second input of the second trigger is connected to the pulse sensor.