SU1635169A1 - Microcalculator data input device - Google Patents

Description

(21) 4473906/24

(22) 08/15/88

(46) 03/15/91. Bul Number 10

(72) V.I. Gostev and A.A. Varanov

(53) 681.327 (088.8)

(56) USSR Author's Certificate No. 1117623, cl. G 06 F 3/00, 1984.

US patent 4151596, cl. C 06 F 3/00, op. 1979

(54) DEVICE FOR INPUT OF DATA IN THE MICRO CALCULATOR

(57) The invention relates to computing and can be used in educational laboratories equipped with programmable microcalculators in the automation of experimental studies. The aim of the invention is to expand the field of application of the device by automating the input of data into the microcalculator. The device contains a programmable microcalculator 1, consisting of calculator 2, keyboard 3, indicator 4, matching blocks 5, 6 and 7, switch 8, decoding unit 9, control unit 10, interface block 11. The device can be implemented as accumulation of data in the memory of the microcalculator, as well as the mode of sequential input of data, when, after entering the data block, they are processed, and then new data are entered, which are also processed, etc. 7 il.

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The invention relates to computing and can be used in educational laboratories equipped with programmable microcalculators in automating experimental studies.

The purpose of the invention is to expand the field of application of the device by automating data entry programmable microcalculator.

FIG. 1 shows a block diagram of a device for automatically entering data into a microcalculator; FIG. 2 shows diagrams of blocks of matching Urolcha; in fig. 3 - structural diagram of the control unit; on the fch .. 4 - with ukut n g bchoka / n-kokirova - them; in fig. 5 - structure 1 - interface block diagram; Fig 6 - Sulma co-switch; Fig. 7 shows the time diagrams of signals at various points: device points.

A device for automatic reading of data in micrograms of mountain | (luig. 1) contains a microcalculator 1, which consists of calculate 2; PLAYERS;, - 3, indicator 4, first, second,; retney matching unit blocks 5,6 and 7, switch 8, decoding unit 9, control box 10, interface unit 11.

Examples of the implementation of individual units of the device are focused on the use of 1 microcalculator Electronics MK-54 as microcalculators.

The matching blocks 5.7 (Fig. 2a) contain a group of identical sub-blocks of inverters (I1) e, which are an emitter follower and are part of blocks 8 and 9,

The level matching unit 6 (Fig. 2b contains a group of identical inverter subunits (I2), which are a voltage amplifier, and is part of block 8.

The control unit 10 (Fig. 3) contains a pulse generator 12, the first element AND 13, a counter 14, a decoder 15, a delay element 16, a pulse former 17, a second element AND 18C

The decoding unit 9 (FIG. 4) contains eight NOT elements 19-26, sixteen keys 27-42, and the third element 43.

The interface unit 11 (FIG. 5) contains a group of data registers 44, a register 45, a group of elements OR 46,

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adder 47, a group of elements And to, element 49 delay.

The switch (fig. 6) contains five elements NOT 50-54, element 2-2I-2, OR-NOT 55, three multiplexers 56-58.

The device for automatic data entry into the microcalculator works as follows.

When a signal appears on the control inputs of the switch 8, the corresponding input of the switch 8 is connected to its corresponding output. Thereby, the corresponding output of the calculator 2 is connected with its corresponding input through the level matching unit j, switch 8, block 6 of the level matching. Thus, the appearance of a binary code on the, -correcting inputs of block 8 is equivalent to pressing the corresponding key on the keyboard 3, i.e. There is the possibility of remote data entry. By appropriately connecting inputs and gates, it is possible to achieve that obtaining the binary codes 00001, 00010, 00011, 00100, 00101, 00110, 00111, 01000, 01001, 01010 on the control inputs of block 8 was equivalent to pressing the keys 0, 1 - 9. During the operation of Block 1 1 of its conjugation, the binary code arrives less by one, the low-order bit, i.e., the binary code arrives less by one low-order bit, i.e.

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0001-1

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which actually corresponds to the representation of decimal numbers in a DBOCH code.

Let at some point in time on the indicator 4 a symbol is set to which the decoding unit 9 is tuned, then at its output a signal arrives at the input of the control unit 10. It will pass to control unit 10 only if there is a signal on the sync input, meaning that the device is externally ready for data transfer, i.e. that it does not change at the moment

information on their outputs. At the control outputs, the signals are output in turn, which, arriving at the interface unit 11, will lead to the sequential reading of information from the data registers 44, the information output output from the unit 11 is synchronized by the synchronization signal from the control unit 10. From the output of block 11, the binary code goes to the control inputs of the switch 8, which causes a reaction similar to pressing the numeric keys of the keyboard 3 "The last control signal from the control block 10 reads information from the register 45. If it contains a code corresponding to the C / 11 operation then the program will be executed further. Throughout the data entry period, a signal is present at the first synchronization output of control unit 10, which prevents the external device from changing information at its outputs. In the absence of this synchronizing signal after changing information on the outputs of an external device

In accordance with the recording impulse coming from the latter to block 11, information is recorded in data registers 43. In this case, it is understood that at the output of the external device information is represented in a binary-decimal code, i.e. each decimal digit of the number is represented in binary code. Spectrum analyzers, digital voltmeters, frequency meters, multimeters, etc. have such an output.

A fragment of the program that provides automatic data entry is as follows. The required place of the source program includes the operation of calling the indicator of the stored 11x1 character (this implies that the character is stored in register I, but it can be in any other). After a character is called, program execution is stopped to receive data (operation C / 11). Thus, the calculation is stopped, the required symbol indicating the permission to enter data is displayed on the indicator. The formation of the character and its recording into the memory I memory is performed before the program starts. So for the IK-54 Electronics Calculator, this is done using a sequence of operations, for example: 15, EC, 99, BlI, f, xII I, with the symbol E5 being formed.

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The algorithm for executing any program has the form ,, (program text until data entry) 11x1 C / 11 ,. . Thus, normal program execution occurs until information from register I (or any other where the E 5 or any other character is recorded) is called, after that the program execution is stopped, the input device is started and the data is automatically entered in microcalculator. After entering, the program continues either until subsequent data entry or until it stops naturally.

FIG. 7 shows temporary signal plots at various points in the system. At time t, sync occurs.

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pulse, indicating that the information on the information inputs of the device will not change, i.e. that data entry is possible. With the arrival of a pulse from the output of decoding unit 9 at time t, a synchronizing output pulse t, tz is generated, prohibiting the recording of information on the registers of interface 11 and the determining data entry time equal to t - t4 - t. The clock pulses of the counter 14 and the decoder 15 are converted into the output pulses of the control unit 10 from time t6.

r These pulses occur each successively at its output of the decoder 15. These pulses, together with the synchronizing output pulses, control the actual data entry process from the registers of block 11 to the microcalculator 1 ". From time t7, information can be updated at the input of block 11, with the arrival of pulse recording at time tg information is recorded in the registers and the device is ready for the next cycle.

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The operation of the proposed device does not impose restrictions on the implemented programs.

A device for automatically entering data into a calculator allows for various data entry modes:

1. Data accumulation mode. In this mode, data is accumulated within the memory volume of the microcalculator (for Electronics

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MK-54 - 14 memory registers), and then their processing.

2. Sequential data entry mode. In this mode, after data is entered, it is processed, after it is completed, new data is entered, which is then processed, and so on.

When choosing a symbol that determines the start of data entry mode in a microcalculator, it should be noted that such a symbol should not be a digit, as this can lead to false activation of data entry mode during the program counting process.

Thus, the system allows data to be automatically entered into a microcalculator.

Claims (1)

Invention Formula A device for entering data into a microcalculator containing a computer, the inputs of which are connected to the keyboard keyboard, the inputs of which are connected H2N With the first group of outputs of Vychnslggel, the second group of outputs of which is connected to the indicator inputs, characterized in that, with 30 the goal of expanding the field of application of the device by automating the input of data into the programmable microdial ten five 0 25 0 the first, second, and third level matching units, a switch, a decoding unit, a control unit, a interface unit, a group of information inputs of which is a group of information inputs of the device, and the first control input is a control input; The second control input of the interface unit is connected to the control output of the control unit, the output group of which is connected to the group of inputs of the interface unit, the outputs of which are connected to the control inputs of the switch, the inputs of which connected to the outputs of the first level matching unit, the inputs of which are connected to the first group of computer outputs, the inputs of which are connected to the outputs of the second level matching unit, the inputs of which are connected to the switch outputs, the second group of computer outputs connected to the inputs of the third level matching unit, the outputs of which are connected to the inputs of the decoding unit, the output of which is connected to the control input of the control unit, the synchronization input of which is the device synchronization input, and the sync output onizatsii - output devices synchronize. Fig.Z Fig Dut.6