SU1425642A2 - Data input device - Google Patents

Abstract

The invention relates to automation and computing and can be used to manually enter information in a processing device. The purpose of the invention is to increase the speed of the device by dividing the keyboard key into the upper and lower groups and setting it to the state corresponding to the beginning of the group to which the key is pressed and then searching within this group. The information input device comprises a keyboard 1, a multiplexer 2, a pulse generator 3, an AND 4 element, a counter 5, the first element OR 6, a HE 7 element, an RS flip-flop 8, a device output group 9, a device output 10, a device input group 11, the decoder 12, the item CLAIMED IL 13, the second element AND 14, the element .NIE 15, the second and third elements OR 16 and 17. The introduction of new elements and connections reduces the search time of the pressed key and increases the speed of the device dp information input twice. 1 il. § SL y. YO SL 05 1 GhE N)

Description

The invention relates to automation and computing, can be used to manually enter information in a processing device and is an improvement in device according to Aut. No. 1112358,

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

The drawing shows the structure of the device.

The device for entering information contains a keyboard 1, a multiplexer 2, a generator of 3 pulses, the first element AND 4, the counter 5j, the first element SH 6, the element NOT 7, the RS flip-flop 8, the output group 9 of the device, the output 10 of the device, and a group of inputs P device, the decoder 12, the element EXCLUSIVE OR 13, the second. Element AND 14, the element AND NOT 15 and second 16 third 7 elements OR,

The device works as follows

Let the keys of the keyboard 1 be divided into two groups, the oldest and the younger, the corresponding starkey, and the first I part of counter 5, each of which I contains half of its volume: At the inputs 11 of the device, the code is set: polusvg-g-kyi of counter 3 states In the initial state, when none of the keyboard 1 keys are pressed, all the selectable inputs of the multiplexer 2 are: logical level O, at its output - logical 1, which. Through element 7, the level of: o C keeps on forward you-: During RS-flip-flop 8, the logical level, pas Hfi, skips tact BbDC impulses from generator 3 output through element 4 to counter 5, at the output of which a sequence is formed ( ) codes, corresponding to the highest. one half of its state and zero: state.

This is due to the fact that during each transition of counter 5 to the zero state (after overflow) on

the zero output of the decoder 12 appears logical 1, which through the action of the element OR 17 enters the first. (directSBR-NNO) and the second (through the element EXCEPTIVE OR 13) The inputs of the element AND-NOT 15 Having formed - at the output of the element 15, the logical O records the code from the inputs.11 of the device into the counter 5,

Jq

15 0

0 5 0

five

0

five

which leads to the appearance of a logical 1 at the first output of the senior group of outputs of the decoder 12 and a logical O at all inputs of the third element OR 17, the logical O from whose output forms a logical I at the output of the I-11E element 15, stopping the recording mode. Counter 5 begins to form code combinations of the upper half of the states (before overflow). Then the cycle of operation of the counter 5 is repeated.

When using the device, there are three main variants of its operation: the state of the counter 5 and the key pressed are related to the start-up group, and the number of the key pressed is higher than the number corresponding to the state of the counter 5 at the moment of pressing; the state of the counter 5 and the key pressed are related to the older groups, but the state of the counter 5 corresponds to the key number that includes the number of the key pressed; counter 5 is in one of the 1 st highest group, and the nadat key is in the lower group of the keyboard,

In the first case, at all inputs of the second 16 and third 17 elements OR there are logical O levels, therefore the entered elements do not affect the operation of the device. At the pressed key, the selectable input of multiplexer 2 forms the code corresponding to the number pressed at the output of the multiplexer 2 sets the logical O received at the first input of the first element OR 6, as well as through the element NOT 7 by the level logical 1, to the S input of the RS flip-flop 8, the state of which does not change.

When the moving contact reaches the normally open contact of the key, a logical O appears on the second input of the first element OR 6, which, by its R input, sets the RS-flip-flop, pa 8 to the zero state. In this case, a logical O from the direct output of RS trigger 8 prohibits the passage of clock pulses from the generator 3 output through an AND 4 element to the input of counter 5, and a logical 1 from the inverse output to the output of the device to allow polling of outputs 9 of the device group 5 “Key pressed code.

ten

15

31425642

When a moving contact returns to a normally closed contact, the VNII appears as logical 1 at the output of multiplexer 2, sets the circuit to its initial state.

In the second case, in contrast to the first, the 5-before counter overflow occurs and its subsequent zeroing. At this moment, at the zero output of the decoder 12 (Toe, in the youngest group), a logical 1 appears at the corresponding input of the third element OR 17.

At all inputs of the second element OR 16, there are levels of logical O, therefore, in the code of the second element AND 14 there is a logical level O, which does not affect the input 5 of the counter 5 for any effect, and the output of the element AND 15 does not form zero a level that records the value of a code set at the device inputs 11, corresponding to the initial (first) state of the senior group of counter states 5. After that, the output of the decoder 12.

there is a logical 1 in the senior Device dp input information group of outputs, on all inputs of the third-zo on auth.St. No. 1112358, a different element OR 17 is set so that, for the purpose of a higher O, the output of the element is not the speed of the device, logical-1 is formed in NAND 15, the decoder is introduced at the beginning of which the code stops from the inputs 11 of the device to the counter 5. stops. The counter 5 continues the settings to About 0, sets it to the zero state.

From the logical 1 to the right, from the left input of the decoder 12 through the third element OR 17 enters the second input of the EXCLUSIVE OR 13 element, the output of which establishes a logical O, which forms the output of the second element AND 14 logical 14 logical 1, which provide the counting mode of the counter 5. Counter 5 continues - counting pulses until a code combination is formed at its output corresponding to the number of the key pressed. Next, the device works similarly to the first case.

Thus, the introduction of new elements and connections can reduce the search time for a pressed key and increase the speed of the device by entering information by an average of two to 25 times.

Claims (1)

Invention Formula 20 35 CHAMTSEEE OR, Second element AND, element I-Ne, second and third elements OR, inputs of the second element OR are connected to the corresponding; keyboard outputs, inputs of the third element OR are connected to corresponding outputs Q of the decoder, outputs of the second and third elements OR are connected with the first inputs, respectively, of the second element AND and the element NAND and the inputs of the element EXCLUDING 1TH SH), the output of which is connected to the second inputs of the second element AND and the element NAND, the outputs of which are connected to the inputs respectively of installation in O and resolution information records of the counter, the information inputs of which are the information inputs of the device, the output of the counter is connected to the inputs of the decoder. the counting of incoming pulses to the moment when at its output a code is formed corresponding to the number of the pressed key, after which the device operates as in the first embodiment. In the third case, the logical 1 from the keystroke key pressed appears at the corresponding input of the second element OR 16 (at the inputs of the third element OR 17 there are logical O levels), from the output of which it goes to the first (directly) and second ( through the element EXCLUSIVELY OR 13) the inputs of the second element And 14 and forms at its output a logical 1, which, affecting the input . installation in About counter 5, sets it to zero. From the logical 1 on the zero input of the decoder 12 through the third element OR 17 enters the second input of the EXCLUSIVE OR 13 element, the output of which establishes a logical O, which forms the output of the second element AND-15 logical 1, which provide the counting mode of the counter 5. Counter 5 continues to count the pulses until a code combination is formed at its output corresponding to the number of the key pressed. Next, the device works similarly to the first case. Thus, the introduction of new elements and connections can reduce the search time for the pressed key and increase the speed of the device for entering information by an average of two times. Invention Formula Device dp input information on author.St. No. 1112358, distinguished by the fact that, in order to increase the speed of the device, a decoder was introduced into it, an element EXCLUDED CHAMTSEEE OR, the second element AND, the element AND-Ne, the second and third elements OR, the inputs of the second element OR are connected to the corresponding; the keyboard outputs, the inputs of the third element OR are connected to the corresponding outputs of the decoder, the outputs of the second and third elements OR are connected to the first inputs, respectively, of the second element AND and the NAND element and the inputs of the element EXCLUDE1CEE SHS, the output of which is connected to the second inputs of the second element AND and the NAND element, the outputs of which are connected to the inputs, respectively, are set to O and enable Records of the information of the counter, whose information inputs are the information inputs of the device, the output of the counter is connected to the inputs of the decoder.