SU932482A1 - Information input device - Google Patents

Description

(5) DEVICE FOR INPUT OF INFORMATION.

one

The invention relates to computing and can be used to enter binary information.

A device for inputting information is known, comprising a contact and touch keyboard, a lock element and a calculator 1.

A disadvantage of this device is the reduction in its speed, since the touch keyboard is used not for information input, but for control.

The closest in technical essence to the present invention is a device for inputting information, comprising a keyboard, the outputs of the first group of which are connected to the inputs of the encoder 2.

A disadvantage of this device is a decrease in its reliability due to errors that occur when a keyboard is accidentally touched.

The purpose of the invention is to increase the reliability of the device.

This goal is achieved by introducing the first and second single-oscillators, the AND element, the delay element, the trigger, the time signal generator, the switch, the first and second registers, and the first and second OR elements, whose inputs are connected to the outputs of the first and second keyboard groups, respectively. , the output of the first element OR is connected to

10 inputs of the first and second single vibrators, the output of the First Uni-Vibrator is connected to the first input of the AND element and through the delay element to one trigger input, the other input of which is connected to the output of the second OR element, and the inverting output of the Trigger element, the outputs of the second single vibrator and element And connected to the lane.

20 and to the second inputs of the time signal generator, the first, second, third and fourth outputs of which are connected to the first and second inputs of the switch and the control inputs of the first and second registers, respectively, the outputs of the encoder are connected to the inputs of the first switch group whose outputs are connected with the information inputs of the first register, the outputs of which are connected to the outputs of the device and to the information inputs of the second register, the outputs of which with the inputs of the second group of the switch.

Fig; 1 shows a diagram of the device; in fig. 2 - timing output diagrams.

The device includes a keyboard 1, touch keys 2, encoder 3 contact keys k, the first and second elements OR 5. and 6, Trigger 7, the first one-vibrator 8, element I 9, the delayed TO element, the second one-shot P, switch 12, the time signal generator 13, the first and second registers I and 15. Figure 2 shows the time diagrams of the output signals of block 13, where 0 and B. diagrams of the output signals when controlling the block 13 from the input and-, and from the input the output signals of the block 13 У, y, i, C, C ,.

The device works as follows

When you touch any key at the output of the corresponding touch key 2, the signal of a logical unit appears. Scoop: the strength of the signals of the key 2 is fed to the inputs of the encoder 3, the outputs of which form the decision code corresponding to the keys 2 to which the operator is attached. In addition, the set of signals from key 2 goes to the Element OR 5 a signal (the 3-fold signal of the contact keys to the element OR 5. The signal of a logical unit goes through the element OR 5 to the one-vibrators 8 and 11 s) The one-one 11 at the time of the touch signal generates a control pulse to block 13, which in turn generates control pulses to switch t2 and registers I and 15 in accordance with Fig. 2q. Under the action of a pulse Cjj, the contents of register f are written to register 15 for storage. vodits opening the switch 12 to the outputs of the encoder 3, and under the action of the pulse produced Cf register write mode code issued by the encoder 3 in accordance with the signals of the keyboard 1, which prikasaets

operator. Thus, at the output of register 1, which is the output of the entire device, there is data about the new mode, and register 15 stores data about the previous mode.

In the case when the operator removes the touch, does not press, at the moment of removal of the touch, the one-shot 8 generates a pulse that freely passes to the generator 13 through the element 9, since in this case the inverting output of the trigger 7 corresponds to the signal of the logical unit. Under the influence of the one-shot signal

8, which is the return signal Uij, generator 13 Generates a pulse train in accordance with FIG. 26 Under the action of a pulse y-i, the switch 12 is opened at the output

register 15, and under the action of the pulse C, the contents of register 15 are read into register 1.

Thus, in the case of removing the touch without pressing the register

H records the previous mode data from register 15, i.e. returns to the previous mode. I. In the case when after pressing the operator presses, the signal of the logical unit with the corresponding key k through the element OR 6 enters the S input of the trigger 7 and puts it into the active state. As a result, a logical signal appears at the inverting output of the trigger 7 zero, which locks the element And 9 and prevents the formation of a return signal. The logical zero signal at the output of the trigger 7 is present as long as the signal of the one-shot 8, which is formed at the moment of removing the touch,; the delay element 10 does not arrive at the R input of the trigger. 7 and does not return it to the passive state. Thus, if pressed, the contents of register 1 do not change when the touch is removed, i.e. the current mode is fixed.

Claims (2)

Consequently, the use of the features introduced into the prototype device makes it possible to increase the reliability of the device by reducing the result of a random touch of the keyboard, since the device automatically returns to the output of the initial information. Claims A device for inputting information, comprising a keyboard, the first group of which is connected to the inputs of an encoder, characterized in that, in order to increase the reliability of the device, the first and second one-timers, the delay element, trigger, time signal generator, switch, first and second registers, first and second OR elements, whose inputs are connected to the outputs of the first and second keyboard groups, respectively, the output of the first OR element are connected to the input второго 1 of the first and second one-one s, an output of first monostable lodklyuchen vomu entry lane to AND gate and via a delay element to one vhrDu Tritt pa. the other input is connected to 26; the output of the second OR element, and the inverting output of the trigger is connected to the second input of the AND element, the outputs of the one-shot single-vibrator and the AND element are connected to the first and second inputs of the time signal generator, the first, second, third, and fourth outputs the first and second inputs of the switch and with the control inputs 1 of the first and second registers, respectively, the outputs of the encoder are connected to the inputs of the first group of switch, the outputs of which are connected to the information inputs of the first reg Stra, the outputs of which are connected to the outputs of the device and to the data inputs of the second register, whose outputs are connected to inputs of the second switch group. (Sources of information, green in attention during the examination 1. USSR author's certificate K 638998, class G 08 B 21/00, 1978. 2. Receiver television Birch C-201 UPIMTST-61-P-1. Operating instructions, schematic diagram, control unit A. Kharkov, 1979 (prototype). L /./ 0U8.Z