SU1352479A1 - Information input device - Google Patents

Abstract

The invention relates to the field of automation, computer technology and can be used in data entry systems for terminal devices from various types of media, including punched tape. The aim of the invention is to expand the field of application due to the possibility of selectively selecting alphanumeric information from the data stream. The device comprises a reading unit 1. memory block 8, two registers 7, 9, multiplexer 2, trigger 5, generator 6 and distributor 4 pulses. The purpose of the invention is achieved by using microinstructions located in cells, the storage device combines alphanumeric information and selects it from the service information, which allows the device to be used in the separation of terminal devices by assigning of these, information in the corresponding zones OR information loading into devices containing elements requiring separate loading, for example devices containing a lot of RAM OR general registers . The device allows the use of punched tapes intended for outputting information to an ADC containing service information; 3 il. 2 tab. (L with with SP yu NJ with

Description

one

The invention relates to automation and computer engineering and can be used in information input systems for terminal devices from various types of media, including punched tape.

The aim of the invention is to expand the scope of application by means of

Selective selection options for the alphabet device are located on the tape.

no digital information from data stream.

Figure 1 shows the functional diagram of the device; figure 2 is an example of the implementation of the algorithm for decoding and sampling the marker parcel; 3, an example of the implementation of the algorithm for sampling and decoding of alphanumeric information.

The device contains (Fig. 1) block 1, a multiplexer 2, an OF element, a distributor 4 pulses, a trigger 5, a generator 6 of pulses, the first register 7, a block 8 of memory, the second register 9.

The device for entering information provides selective reading of information from a punched tape and performs the following functions: it searches for and decrypts the sign of the beginning of the information zone; performs decryption (search) of the specified number (s) of the zone (s); reads alphanumeric information and selects it from the service information stored on a punched tape, thus converting information from one system to another. searches for a marker for the end of a zone and stops combining information in a given zone after decoding the marker for the end of a zone.

The desirability of informing an informa- tion on register 7 (A. tempos in a given zone is due to using the proposed device to enter information into its various receivers (for example, different zones of RAM) or to enter information into different devices served by the same interrogator.

The device works as follows.

50

Depending on the state of data bits at its input, the microprogram word or the contents of the corresponding address of memory cell 8 is read from the memory block at each time step.

Firmware words contain

Let 55 microcommands of the group (A. ,, Aj) address and information constants be fixed on punched tape. The purpose of the commands is the following: Y - ensures resetting of registrars 7, register 9 of the distributor 4;

information for multiple devices. Each device has its own zone, identified by a zone start marker and a zone number. room

zones defined by a specific number of lines on the tape.

Information on punched tape is encoded in accordance with the KOI-7H seven-bit code. The meaning of the code symbols is given in Table 1.

Code parcels of layers, including the zone marker to be recorded

0

s

ABOUT

in order of incrementally increasing addresses, starting with the starting address, therefore the addresses of words on the tape are not represented.

Before the code message with the corresponding address, the code package of the control character Beginning of the header (NC) and the next word of the zone number are placed on the tape.

In front of the marker NC, any code parcels (not subject to input on the device) can be placed on the tape.

The reformation, read from the perforated 5 tapes, from block 1 enters the information input of multiplexer 2, and the sync pulse from the link unit sets trigger 5 to a single state.

Trigger 5 with a single output signal triggers a pulse generator.

The leading edge of the first clock pulse acting on the control input of the register 7 records information from the zero cell of the memory block 8, since The previous (initial) state of the address register was zero.

five

ZO

40 Simultaneously, from the inverse output of the trigger 5, the block 1 is given a signal prohibiting the movement of the tape to the next piercing.

Under the influence of the address registered

Depending on the state of data bits at its input, the microprogram word or the contents of the corresponding address of memory cell 8 is read from the memory block at each time step.

Firmware words contain

3

Yj - provides zeroing of the trigger 5;

Yj - provides the resolution (control) of the element And 3.

The assignment of groups (A, A) to address and information constants is the following: it provides coding of the address of the next memory location when executing the current command; A - both encodes data coding in the form of a conversion-dependent algorithm, depending on the value of the information received from block 1.

In the present embodiment, block 1 receives information in the KOI-7N code, and data in the binary code is generated at the output (other conversion options can be implemented).

The low bits of register 7 (in the present embodiment, three bits) control the operation of multiplexer 2. The enumeration of the values of these bits ensures sequential reading (conversion) of the bits of the parallel code fed to the multiplexer, i.e. to address (Aj) input of memory block 8.

The polling sequence of multiplexer 2 and the sequence of selecting addresses in group A is determined by the firmware fixed in block 8, the branching of which to reach the memory cell containing the corresponding information constant is made using the base (AJ) address. The value of the selected constant is fed to the information input of all sections of the data register 9, but is fixed in the one that corresponds to the decrypted hexadecimal discharge (see table), the numbers on the tape are represented in the KOI-7H code, which corresponds to the sixteen binary binary code. The output can be represented by n lines on a punched tape, then each row on a punched tape encoding numeric information is recorded in the corresponding section of the data register.

If information is placed on a tape in the following order: younger, more senior, etc. bits, then in the data register 9, the least significant bit is placed in the left section, then the older one, and so on.

The low-order bit is recorded in the register by a 9 clock pulse, the incoming one from the low-end distributes,

Yu

15 20

30 35 S 45 50

55

52479 .4

l 4, then the next, etc. the senior sync pulse captures the senior bit.

The last (senior) clock also serves as a clock signal for reading data from the device.

The sync pulses are generated by the distributor 4 by applying to its synchronization input clock sync pulses from the output of the element I 3, which is resolved by the microcommand Yj and gated by a series of pulses from the generator 6 pulses.

Thus, on the leading edge of the main pulse train of the generator 6, the address of the memory block containing the corresponding information constant (determined as a result of the analysis of the information word) is fixed in the address register and through the sum of delays 2, C and C. from the memory cell this address selects the required information constant, which is fixed by the leading edge of the pulse from the distributor 4, which is formed in antiphase with the main pulse train, where, is the signal propagation delay in the multiplexer; time to fetch information from. Memory; T, - the time of recording information in the register 9.

When designing a device, the ratio should be

-e, + "J + Tz 4 5 t",

where TO is the period of the reference frequency of the generator 6 pulses.

When developing (executing) a microprogram word that is the resultant (step 8, Table 2) or with a negative result of decoding (the contents of the auxiliary memory cells, Table 2), the microinstruction Y is developed, which zeroed the trigger 5.

The high potential of the inverse output trigger 5 ensures the advancement of the tape on the block to the next step (punching). The operation of the device in the next step is repeated.

Service space, line feed, etc. the information placed on the tape by means of the microprogram is not decrypted and is not output to the register 9.

In the case when on the punched tape there is (before the decoding of the zone marker) any information that is different with its code from the NC code (Table 1), the device, receiving this information, decrypts it using a subroutine (Table 2 and Figure 2) and -y make micro-command Y 1,

fO

which brings the device to zero, drives it back to its original state.

Thus, until the zone start marker and its number are decoded, the rest of the information on the device output is not displayed. The result of the decoding of the marker and the zone number is to set the corresponding bit of register 7 to the one state. In the conditioned case, this bit is the lower bit of the higher triad A.

An example of the implementation of the algorithm for decoding a zone marker is shown in, and the microprogram corresponding to this algorithm is shown in Table 2.

According to the algorithm, the multiplexer 2 demand is produced by the first

1352479,

The decryption of others, not listed in Table I., postage at the title search stage leads to the reset of register 7, i.e. to device failure; i; BOM information (except for NZ).

In the depreciation mode (Fig. 3) of the information parcel, the reception of data into the register 9, which is different from the code premises representing the numerical data, according to the table, is not performed.

Similarly, a decryption routine (transformation) of alphanumeric information 15 can be organized.

Claims (1)

Formula invented A device for inputting information containing a linking unit, a multiplexer, a pulse distributor, a trigger, an AND element, information outputs of the linking block are connected to the information inputs of the multiplexer, the output of the AND element is connected to channel (operator 2, figure 2), i.e. Pro 25 distributor sync input analysis of the low-order value is exhausted. The value of the marker parcel (NC) is given in table 1. When reading the low-order bit (it is equal to one, see Operator 3, Figure 2), in the first step, control is transferred to a memory cell with address 1002d, from where control is transferred to a memory cell with address 002g (third-step, Table. 2). Due to the fact that the value of all the remaining bits is zero, they are decrypted using 6-23 operators of Fig.2 and 3-8 steps (Table 2). After decryption of the dressing, the zone number is decoded. An example implementation of the subroutine decryption zone numbers is shown in figure 3. In order to increase the description of the subroutine of entry into the zone, the transition to the subroutine of sampling numerical data was performed directly by the subprogram of the NC decryption (operator 23, figure 2). When the operator 23 is executed (step 8 of the program), a register is set to register 7 (the least significant bit of the highest triad), after which information is decoded. An example implementation of an algorithm that performs such a decryption is shown in FIG. Formula invented A device for inputting information containing a linking unit, a multiplexer, a pulse distributor, a trigger, an AND element, information outputs of the linking block are connected to the information inputs of the multiplexer, the output of the AND element is connected to pulses, characterized in that, in order to expand the scope of application by providing the possibility of selective sampling of alphanumeric digital information from the data stream, a memory block, two registers, a pulse generator, synchronization block synchronization input code are entered into it, The 5th direct output of which is connected to the trigger input of the pulse generator, and the inverse output to the control input of the readout unit, the direct output of the pulse generator is connected to the sync of the first register, and the inverter to the first input of the And element, the low-voltage outputs of the first the registers are connected to the address inputs of the multiplexer, and the higher bits are connected to the address inputs of the lower bits of the memory block, the outputs of the multiplexer are connected to the address inputs of the higher bits of the memory block, the outputs of the first group of which are connected with information inputs of the first register, outputs of the second group with information inputs of the second register, the first output of the memory unit is connected to the reset inputs of the first and second registers and the pulse distributor, the second output of the memory unit is connected to the reset input of the trigger, and the third output is the second entrance ele5 0 five And, the first and second outputs of the pulse distributor are connected to the first and second synchronous inputs, respectively, of the second register, and the third output is connected to the third sync input of the second register and is Note. VK - carriage return, PS - line feed. 1352479- 8 the device sync output, the outputs of the second register are the information outputs of the device, the information input of the trigger is connected to the bus of the logical unit of the device. Table 1 The addresses and content of the auxiliary memory cells for this subroutine: Compiler A.Trunov Editor M.Tsitkina Tehred M.Hodanich Proofreader V. But ha Order 5566/48 Circulation 671 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Projecto st., 4