SU885987A1 - Data input device - Google Patents

Description

one

The invention relates to information technology and can be used to manually enter information into digital devices for adjusting the settings of digitally-controlled sources of reference voltage and digital-guiding delays, where / you need to have a monotonous change in the input information.

A device for inputting information is known, comprising a keyboard, comparison units, a clock pulse generator, a ready signal conditioner and triggers 1.

A disadvantage of the known device is the impossibility of changing the fast monotonous input of information. The closest in technical essence to the present invention is a device for entering information, comprising a keyboard, a pulse generator, a group of elements ft, three OR elements, three one-shot and, register {2.

The disadvantage of this device also consists in the impossibility of changing the speed of monotonous input of information.

The purpose of the invention is to control the speed of information input.

The goal is achieved by the fact that the device contains a second counter, diifrator, first and second additional elements AND, the output of the pulse generator connected to the first input of the second counter, the first outputs of which are connected to the first inputs of the elements AND, the second inputs of which are connected to the outputs

10 diifters, whose input is connected to the second outputs of the second counter, the second input of which is connected to the output of the first OR element, the first and second inputs of which are connected to the first inputs of the first and second additional elements AND, the second inputs of which are connected to the output of the second OR element, outputs nepfeoro and second extra

20 elements And connected to the first and second inputs of the first counter.

In addition, the device contains a display unit, and the output of the first counter is connected to the input of the unit

25 indication.

The drawing shows a block diagram of a device for entering information.

The device contains a generator 1

30 pulses, the first counter 2, the elements And 3, the decoder 4, the first element OR 5, the first and second switches 6 and 7, the second counter 8, the display unit 9, the first additional element And 10, the second additional element And 11, the second element OR 12, and output 13 of the device.

The device works as follows.

In the initial state from the generator

1 pulses to the counting input of the blocked first counter 2 receives the clock frequency. The decoder 4 blocks on the second inputs all the elements And 3, except the first, which is defined by the code on the input of the decoder. On both inputs of the reversing second counter 8 signals are missing. In the reversible second counter 8 there is information that is initiated by the display unit 9 and is present as a code at the output 13 of the device.

When the first pushbutton switch 6 is pressed, the signal through the second element OR 12 unlocks the first counter 2 and the first additional element AND 10. At the output of the first element 3, the divided clock frequency appears, determined by the most significant bit of the first counter, i.e. very low frequency. The signal from the output of the first element And 3 through the first element OR 5 and the first additional element And 10 enters the input of the direct count of the second counter 8. On the output buses 13, the digital information changes upward, which is indicated by block 9. The rate of change of information is determined divided by the clock frequency of the generator 1, arriving at the first input of the first element IZ.

As the work of the first counter

2, the code at the inputs of the decoder 4 is changed. In this case, the first element AND 3 is blocked and the second element 3 is unlocked, to the input of which comes from the first counter 2 a higher clock frequency. Accordingly, at the input of the direct count of the second counter 8, the frequency of clock pulses increases. In the reverse counter 8 there is a monotonous increase in the speed of information input. The speed increases as long as the pushbutton switch 6 is depressed. IIoCTie release switch 6: 1 (| the event returns to its original state, and on output buses 13

set the number determined by the code from the outputs of the bits of the reversible second counter 8 and indicated by the display unit 9.

When the button switch is pressed, the unit 7 operation is characterized in that the clock pulses from the output of the first element OR 5 arrive through the unlocked second additional element 11 to the reverse count input of the reversing second counter 8. In this case, a monotonous decrease in the speed of information input occurs. until the button switch 7 is pressed.

Claims (2)

1. An information input device containing And elements, the first counter, the pulse generator, the first Q and the second switches, the outputs of which are connected to the first and second inputs of the first element OR, the outputs of the elements AND are connected to the inputs of the second element OR, the output of the first counter is the output of the device, characterized in that,. in order to control the speed of information input, it contains the second counter decoder, the first and second additional elements And, the output of the pulse generator is connected to the first input of the second counter, the first outputs of which are connected to the first inputs of the elements And, the second inputs of which are connected to the outputs 5 decoder, the inputs of which are connected to the second outputs of the second counter, the second input of which is connected to the output of the first element OR, the first and second inputs of which are connected to the first inputs of the first and second additional elements AND, the second inputs of which are connected to the output of the second element OR, the outputs of the first and the second additional elements And connected to the first and second inputs of the first counter. 2. Device POP.1, characterized in that it contains a display unit, with the output of the first counter connected to the input 0 display unit. Sources of information taken into account in the examination 1. USSR author's certificate No. 618735, cl. G 06 F 3/02, 1976. 5 2. USSR Copyright Certificate 612237, cl. G 06 F 3/02, 1976 (prototype). t 9