SU1418699A1 - Device for retrieving information from punched tape - Google Patents

Description

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; The invention relates to computing and information technology and can be used in devices for entering information into a computer with a punched tape.

The aim of the invention is to increase the reliability of the device by reducing the amount of equipment.

I FIG. 1 shows the structure of the device; Fig. 2 shows the block of the block number of the zone number.

The device comprises a readout block 1, a pulse former 2, a comparison unit 3, a zone number setting unit 4, a trigger 5, a register 6, a delay element 7, a counter 8 and a memory block 9.

Shaper 2 pulses and delay element 7 can be executed on a 533AGZ type IC chip, a tri-fep 5 on a 533ta2 type microcircuit, a comparison block 3 — on a ЗЗЗСШ type microcircuit, a register 6 — on a 133IR13 type microcircuit, a unit for setting the Zone number - on microcircuits of type 533IE7 and $ ZZIR26.

The device works as follows.

: Initially, the trigger 5 is set to the zero state (not InoKaakHo), while the zero level from trigger 5 at the control input of the zone number assignment 4 determines the output information of the latter as the first code word of the zone number. Register 6 is in the zero state.

The pulse shaper 2 is triggered by the sync pulses from the sync output of the readout block 1.

When the information corresponding to the first code word arrives, it is fed from the information output of read unit 1 to one information input of compare unit 3. If the code of this information coincides with the information code that arrives at the other information input of block 3 of the comparison with block 4, specifying the zone number, a unit level is set at the output of block 3.

The passage of any information through the block 1 readout triggers the generator 2 pulses.

The leading edge of the pulse from the output of the imager 2 pulses arriving at the clock input of the trigger 5,

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five

0 5

0

0

five

0

five

the latter is set to one state, by allowing the L to shift the information in register 6 and search through the code words at the output of block 4 to specify the zone number, which is accomplished by changing the state of counter 8 by pulses from the output of the driver 2. At a predetermined pulse front from the imaging unit 2, a unit is recorded from the output of the comparison unit 3 for the first register bit 6.

With the arrival of the second code word from block 1 of reading on the leading edge of a pulse coming from the output of the driver 2 pulses to the clock input of block 4 specifying the zone number, counter 8 increases its state by one and the output of block 9 of the memory produces the second code word the second input of unit 3 comparison. If the information word from the output of block 1 reads to the second code word is equal to the falling edge of the pulse coming from the output of the driver 2 pulses to the register 6 input, the unit from the output of the comparison block 3 is recorded in the second register bit 6. The trigger 5 maintains its one state the

In the next cycle, the information word from the output of read block 1 is compared with the next code word from the output of block 4 to specify the zone number. When they are equal with the pulse from the output of the pulse generator 2, the unit is recorded by the information input and the information is shifted in register 6.

The shift cycles continue until the unit is in the high order of the register 6, which is the output of the device. In this case, the unit level through the delay element 7, arriving at the setup input of the trigger 5, sets it to the zero state. Register 6 is zeroed, the counter 8 of block 4 specifying the zone number is zeroed.

If the information from the output of block 1 reads to the next code word from the output of block 4, specifying the zone number, a pulse from the output of the pulse former 2 is recorded by the information input of zero level into trigger 5, while the counter 8 of block 4

zone numbers and register 6 are zeroed at the setup inputs. In the next cycle, a check is performed for the equality of the information word from the output of the reading unit 1 to the first code word.

The positive effect of using the invention is to reduce the amount of equipment, which is achieved with the exception of the decoder, the group of elements And, the valve, the distributor and the reduction of the register and the comparison unit.

Claims (2)

Invention Formula 1, Device dp information retrieval on punched tape containing block The synchro outputs whose sync output is connected to the input of the pulse former, the unit for setting the zone number, the output of which is connected to one input of the comparison unit, the delay element whose output is connected to the trigger input of the trigger, and a register that differs from that. 0 five 0 5 In order to increase the reliability of the device by reducing the amount of equipment, the information output of the readout unit is connected to another input of the comparison unit, the output of which is connected to the information input of the register and the information input of the trigger, the output of which is connected to the installation inputs of the register and the unit for setting the zone number, the clock input of which connected to the output of the pulse generator and clock inputs of the trigger and register; the output of the co-driver is the output of the device and is connected to the input of the delay element. 2. The device according to claim 1, wherein the block for setting the zone number contains a counter, the setup input of which is the setup input of the block, and the clock input is the clock input of the block, the output of the counter is connected to the address input of the memory block The output of which is the output of the zone number setting block.