SU1156050A1 - Information input device - Google Patents

Abstract

1. DEVICE FOR INPUT INFORMATSH containing keyboard, register, decryptor: tori, indicators, first and second elements AND, first and second keypad keys are connected to the first and second inputs of the first element AND, respectively, the output of the second element AND is connected to the first input of the register, the outputs of the decoders are connected to the inputs of a group of indicators, characterized in that, in order to increase the speed of the device, the first trigger, the first and second groups of elements I, counters are entered into it, the inverse output of the first trigger is connected to The first and second element inputs of the first and second elements of the second group are the direct output of the first trigger and the device’s input is the first input of the device, the information input of the first trigger and the second register input are connected to the positive potential bus , and its sync-input is connected to the even-grained keyboard output, the third output of which is connected to the second f and l; 1p i “,. ; the input of the second element And, the first input of which is connected to the first keyboard output, the output of the first element And connected to the first inputs of the elements And the first group, the register outputs are connected to the second inputs of the elements And the first and second groups, the outputs of the elements And the first group are connected to the {{ the meter inputs, the meter outputs are connected to the decoder inputs and are. the device group outputs, the element outputs, and the second group are connected to the indicator inputs, the keyboard input is the second device input. 2. The device according to claim 1, ex (if the keyboard contains a node of switching elements, first and second generators, first to TpeTitfi comparators, second to fourth triggers, and a delay element, the output of the first generator is the first keyboard, The output of the second generator was connected to the inputs of a node of co-operation elements and the input of a delay element, the outputs of the com-unit assembly were connected to the first inputs of the comparators, the second inputs of which are the keyboard input, the outputs of the comparators There are no inputs from the second to fourth triggers, the output of the delay element is connected to sync inputs from the second to fourth triggers, outputs from the second to fourth triggers are from the second to the fourth, respectively, of the keyboard.

Description

The device relates to automation and computing and can be used in microcomputer consoles, microprocessor systems, as well as in other electronic devices that have a keyboard for manually typing and entering information. The aim of the invention is to increase the speed and increase the flexibility of the device. The drawing shows a functional diagram of the device. The device contains a keyboard 1, the first trigger 2, the first 3 and the second 4 elements And, the register 5, the first 6 and second 7 groups of elements And, counters 8, decoders 9, indicators 10, indicators familiarity 11, the first 12 and second 13 generators, node 14 switching elements, first 15, second 16 and third 17 comparators, second 18, third 19 and fourth 20 triggers, delay element 21. The device works as follows. In the initial state, the IB20 triggers are set to the zero state, since the switching elements of unit 1 are depressed, the reference voltage on the non-inverting inputs of the comparators 15-17 exceeds the voltage on the j-pc inverting inputs and the outputs of the comparators have a potential of zero logic level. At the first input of the device, a signal is received. Input resolution, by which the trigger: ger 2 is set to the zero state. In one of the bits of the register 5, the shift is written 1. Thus, before the input to the first inputs of the And 7 elements, the resolving potential comes from the output of the trigger 2, and if there is a corresponding bit of the 5 register output, the shear 1 turns on the corresponding And 7 element Familiar indicator 11, which signals the operator that the input is allowed by the corresponding message bit in counter 3, the contents of which are indicated on the sign indicator 10. Square pulses from the output of the generator 12 pulses are fed to n rvye inputs of first and second AND gates 3 and 4. When the second switching element is pressed by the operator on the keyboard 1, the inverting input of comparator 16 is a pulse signal prevshayuschy level reference voltage at its non-inverting input and the output signal 1 is formed. The same pulse from generator 13 triggers delay element 21, and after a while, the status information of comparator 16 is rewritten into trigger 19. After trigger 19 triggers, the second input of element 4 receives the enable potential. At the third input, at this time, there is a resolving potential coming from the output of flip-flop 2, and the first input receives the pulses -C of the generator 12. 1 in register bits 5. When advancing 1 in register 5, the corresponding elements of AND 7 are successively triggered and the corresponding indicator of the familiarity indicator It is indicated. When approaching the required bit, which is indicated by elements 11, the operator stops acting on the switching element, at the output of flip-flop 19 a potential appears which, entering the second input of element 4, prohibits the passage of shift pulses to register 5 and stops shifting 1 in register. The device is ready to enter information into the required bit. Next, the operator proceeds to the character set of the specified alphabet in the required location. To do this, it touches the first switching element in block 1, Comparator 15 triggers, potential 1 appears at its output. At the same time, delay element 21 starts, and after a time QA output, a strobe signal appears, which overwrites the output of the comparator 15 to the trigger 18. At the second input of the element I 3, the resolving potential is established, and the third potential input of the element 3 also enters the resolving potential. At the output of the element And 3, counting pulses are generated for the counters 8. The counting pulses arrive at the first inputs of the And 6 elements, and the third element And 6 is triggered, the second input of which receives a logical 1 from the output

the corresponding register bit 5 shift. Thus, the counting pulses from the output of the corresponding third element And 6 arrive at the counting input of the counter 8, the state of which through the decoder 9 is reflected on the sign indicator 10, where a sequence of characters of the given alphabet occurs, for example digits from O to 9 or digits from O to 9 and the letters a, b, c, d, e, f for the case of a hexadecimal alphabet.

When approaching the required symbol of a given alphabet, the operator stops affecting the switching element of block 1. At the output of comparator 15, potential O is formed. On a pulse from the output of delay element 2t, potential O is rewritten to trigger 18 and prohibits the passage of counting pulses to counters 8. Discharge is terminated.

To form the next bit symbol, the operator shifts the enable potential in register 3, as described above.

Upon completion of the formation of the symbols of the entire message, the counters 8 store all the information that must be overwritten by an external device.

for example, a microprocessor, with all the information being indicated on the indicators 10.

Next, the operator acts on the third switching element of unit 1. A comparator 17 triggers, and information about its output is written to the trigger 20. On the leading edge of the signal from its output, the trigger 2 is set to one state. At the same time, from the inverse output of trigger 2, elements 3 and 4 receive a potential prohibiting a change in the state of the device, and a non-inverting output to the output of the device receives an interrupt signal. In addition, the signal from the inverted output of trigger 2 prohibits elements 7 and stops the indication familiarity. This means that the input is forbidden and its renewal is possible only after the external device has processed the Interrupt signal.

After receiving the code of the last input, the external device, in its readiness to receive, sets the input resolution signal at the device input, which resets trigger 2 to the zero state. The device is ready to form a new message.

Claims (2)

1. A device for inputting information, comprising a keyboard, a register, decoders, indicators, the first and second elements AND, the first and second outputs of the keyboard are connected to the first and second inputs of the first element And, accordingly, the output of the second element And is connected to the first input of the register, the outputs of the decoders connected to the inputs of a group of indicators, characterized in that, in order to increase the speed of the device, the first trigger is introduced into it, the first and second groups of elements And, counters, the inverse output of the first trigger is connected to the third the inputs of the first and second elements AND and with the first inputs of the elements AND of the second group, the direct output of the first trigger is the output of the device, and its installation input is the first input of the device, the information input of the first trigger and the second input of the register are connected to the bus of the positive potential of the device, and its sync input connected to the fourth output of the keyboard, the third output of which is connected to the second input of the second element And, the first input of which is connected to the first output of the keyboard, the output of the first element And is connected to the first and the inputs of AND gates of the first group of register outputs are connected to second inputs of AND gates of the first and second groups, outputs of AND gates of the first group are connected to the counting inputs of the counters, the outputs of the counters are connected to inputs of decoders are. the outputs of the device groups, the outputs of the elements And the second group are connected to the inputs of the indicators, the keyboard input is the second input of the device. 2. The device pop. 1, characterized in that the keyboard contains a node switching elements, the first and second generators, first to third comparators, second to fourth triggers and a delay element, the output of the first generator is the first output of the keyboard, the output of the second generator is connected to the inputs of the node of the switching elements and the input of the delay element, the outputs of the node switching elements are connected to the first inputs of the comparators, the second inputs of which are the input of the keyboard, the outputs of the comparators are connected to the information inputs with orogo to fourth flip-flops, the delay element output is connected to a clock terminal of the second to fourth flip-flops, the outputs from the second to fourth flip-flops are a second to fourth outputs of the keyboard respectively.