SU1481845A1 - Data display on screen of digital display - Google Patents

Abstract

The invention relates to an information-measuring technique and is intended for storing and displaying the contents of multi-digit storage of digital information. The aim of the invention is to enhance the functionality by providing independent correction of information in any digit of a digital display. The device contains two counters, a pause generator, a clock generator, a digital display, a decoder, a character generator, N serially connected shift registers, forming a ring shift register. Parallel information inputs of each shift register are connected to information buses, to the write inputs of shift registers - with the outputs of the corresponding OR-NOT elements, whose inputs are connected to the transfer outputs of the first counter. 1 il.

Description

one

The invention relates to an information-measuring technique and is intended for storing and displaying the contents of multi-digit storage of digital information.

The purpose of the invention is to expand the functionality by providing independent correction of information in any bit of a digital display.

The drawing shows a block diagram of the proposed device. The device contains the first 1 and second 2 counters, the output of the counter 1 is connected to the counting input of the counter 2 and the input of the pause generator 3, the output of which is connected to the input of the 4 clock pulse generator, the output of which is connected to the counting input of the counter 1, the discharge outputs of the counter 2 are connected to the inputs of the decoder 5,

the outputs of which are connected to the control inputs of the n-bit digital display 6, the information inputs of which are connected to the outputs of the character generator 7, the control inputs of the latter and the decoder 5 are combined and connected to the output of the pause generator 3, the information output of the latter bit of the n-th shift register 8 is connected to the information serial input of the first shift register 8, the clock inputs of all shift registers 8 are connected to the generator output of 4 clock pulses, parallel flax data inputs of each of the shift register 8 are connected to respective data lines 9, porazr dnye outputs the nth shift register connected to the data inputs of the character generator 7,

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the write entries of the shift registers 8 are connected to the outputs of the corresponding elements OR NOT 10.1-10 „4, whose inputs are connected to the transfer output of the counter 2.

At the same time, depending on the tasks assigned or on the functional purpose of the device which includes the proposed device, the second inputs of the elements OR NOT 10.1-10.4 can be connected in different ways: to manually set the persistently stored information, the second inputs of the elements OR NOT 10.1 are connected via buttons 11.1 to the common bus, in those cases when the shift registers 8, which are triggered by the falling edge of the transfer pulse of counter 2, are used, instead of the two-input elements OR NOT 10.1, buttons 11 are used .2 single-input elements OR-NOT 10.2 (inverters), since in this case there will be no false alarms of the registers due to the bounce of the contacts of buttons 11.2, the element OR-NOT 10.3 is used to display the measured frequency value in the electron-counting frequency meter, one for all bits, the second input of which is connected to the input control bus 12 (to the output of the time meter display of the frequency meter — not shown), to display constantly changing information without resetting, an OR-NOT 10.4 element with one input (inverter).

The device works as follows

The transfer pulse from the output of counter 2 is fed to the inputs of shift registers 8 at those times when counters 1 and 2 are reset to their original state, and the stored information is in the same register bits, i.e. as it was first recorded in memory. Therefore, the transfer pulse, received in the corresponding shift register 8, allows it to receive input information without disturbing the information in the remaining bits of the memory,

Thus, the proposed device due to the synchronization of work

the shift register 8 in the record mode with the moments of self-resetting of the counters allows independent correction of the stored and displayed information in randomly selected bits without destroying or distorting the information in the other bits,

Claims (1)

Invention Formula A device for displaying information on a digital display screen, comprising: 5 pause generator, clock generator and the first pulse counter, the output of which is connected to the counting input of the second pulse counter and the input of the pause generator, 0 outputs of bits of the second pulse counter are connected to information inputs of the decoder, the control input of which is connected to the output of the pause generator and to the control 5 to the input of the character generator, the outputs of the decoder are connected to the control inputs of the n-bit digital display, the information inputs of which are connected to the outputs of the character generator, 0 serially connected shift registers, the information output of the last bit of the nth shift register is connected to the information serial input of the first register 5 shift, register clock inputs the shift is connected to the output of the clock pulse generator, the parallel information inputs of each shift register are connected to the corresponding information input buses, The bit outputs of the nth shift register are connected to the information inputs of the character generator, characterized in that 5 extending the functionality by providing independent correction of information in any digit of the digital display, the transfer output of the second pulse counter is connected Q with the first inputs n additional elements OR NOT, the second inputs of which are connected to the control buses, and the outputs are connected to the recording inputs of the corresponding shift registers. t 9 {8