SU1564682A1 - Device for teaching fundamentals of computers and data processing - Google Patents

Abstract

The invention relates to educational and laboratory equipment, can be used in the educational process, in design offices for modeling and debugging discrete devices built on integrated circuits, and allows you to expand didactic capabilities and improve device performance by reducing the time spent on identifying racing situations by the introduction of a new discipline - the automatic identification of racing situations. The device contains an operator panel 1, a unit 2 of information presentation (external input signals), a switch 3, a dial pad 4, logic elements 5, a block 6 of memory. The console 1 contains a generator of 7 single pulses, a generator 8 of a continuous sequence of pulses, a generator 9 zero, a switch 10, element 11 and 11, a control keyboard 12, a register 13, a race control unit 14. Unit 14 contains a switch 15, a group of elements 16 addition modulo two and a group of indicators 17, a permanent storage unit 18, a switch 19, a trigger 20, a generator 21 of a continuous pulse sequence, an indicator 22, an AND 23 element and a sound alarm unit 24. Element 5 comprises a switch 25, a logic node 26, an indicator 27 and a switch 28. Block 6 contains a switch 29, a memory element 30, a switch 31, indicators 32, 33 and a prediction node 34. Each node 34 contains an inverter 35, elements AND 36,37, element OR 38. Indicators 32 and 33 are structurally combined into display unit 39, and elements 16 into an adder 40, 2, or ill.

Description

one

(21) 4475005 / 24-24

(22) 08/19/88

(46) 05/15/90. Bul K 18 (72) V.A.Nesmelov, V.I.Nazin, S, F.Tyurin and V.A. Kharitonov

(53) 681.3.071 (088.8)

(56) USSR Author's Certificate No. 1394222, cl. G 09 B 23/48, 1986.

(54) DEVICE FOR TEACHING COMPUTER TECHNOLOGY BASES

(57) The invention relates to educational and laboratory equipment, can be used in the educational process, in design offices for modeling and debugging discrete devices,

built on integrated circuits, and allows you to expand didactic capabilities and increase device speed by reducing the time spent on identifying racing situations by introducing a new discipline — automatic identification of racing situations. The device contains an operator panel 1, a unit 2 for presenting information from external input signals, a switch 3, a dial pad 4, logic elements 5, a block 6 of memory. Remote 1 contains a generator of 7 single pulses, the generator 8 of a continuous sequence

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Pulses, generator 9 chickpeas, switch 10, element 11, control key 12, register 13, block 14 of race control. Block 14 contains a com mutator 15, a group of elements 16 modulo two, and a group of indicators 17, a persistent storage unit 18, a switch 19, a trigger 20, a generator 21 of a continuous pulse sequence, an indicator 22, an element 23 and The sonic acquisition unit 24 relates to educational and laboratory equipment and can be used in the educational process, 1 also in the design offices for modeling and debugging discrete devices built on integrated circuits.

The aim of the invention is to expand the didactic capabilities of the device with a reduction in training time and a decrease in the identification of racing situations,

Figure 1 shows a functional diagram of the proposed device for teaching the basics of computing; figure 2 - timing charts of the control unit races.

A device for learning the basics (computer technology contains an operator panel 1, a unit 2 for presenting information (external input signals), a switch 3, a dial pad 4, logic elements 5, and blocks 6 of memory.

The console 1 contains a generator 7 (single pulses), a generator 8 (continuous pulse train), a generator 9 (zero), a switch 10, element 11, a control keyboard 12, a register 13, and a race control unit 14. Block 14 contains a group of modulo-2 add-on elements 16, indicator .17, block 18, memory switch 18, trigger 20, generator 21 (continuous pulse train), indicator 22, And element 23, audible signal block 24.

Logic element 5 contains switch 25, logic node 26, indicator 27 and switch 28, Block 6 contains switch 29, memory element 30, switch 31, indicators 32,. 33 and prediction node 34. Node 34

nalization. Element 5 comprises a switch 25, a logic node 26, an indicator 27 and a switch 28. Unit 6 contains a switch 29, a memory element 30, a switch 31, indicators 32, 33 and a prediction node 34. Each node 34 contains an inverter 35, elements AND 36, 37, element OR 38. Indicators 32 and 33 are structurally combined into display unit 39, and elements 16 - into adder 40. 2 Il.

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contains inverter 35, elements AND 36, 37, Element OR 38. Indicators 32 and 33 are structurally combined into display unit 39, and elements 16 into adder 40.

A device for learning the basics of computing works as follows.

Normal mode of operation.

The student, having solved the task of the logical synthesis of the functional scheme for the specified operating conditions, dials it on the dial field 4 of the modules of the elements 5 and blocks 6 using connecting wires (not shown) connecting the switches 3, 25, 28, 29 and 31 according to with the resulting functional diagram. After that, he presses the switch button 19 to set the trigger 20 to the zero position, allowing the permit signal to pass to element 11 and prohibiting to element 23. To build a mathematical model of the synthesized automaton, the student using generator 9 sets the elements 30 to the inputs to the state code of the first row of the transitions-exits table. This state 6 binary code is displayed on indicators 32,

The student then inputs the input signals using the control keyboard 12, Register 13 eliminates the keyboard contact bounce and acts through block 2, which displays the binary code of the input signal, to the external inputs of the machine connected to the switch 3. At the same time, the nodes 34 perceive the input and output signals of the elements 30. Inverter 35 in- v inverts the signal from the input element

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30, the element 36 performs a logical multiplication operation on signals from the output of the inverter 35 and the output of the element 30. The element 37 performs a logical multiplication operation on the signals of the element 30. The element 38 performs a logical addition operation on the signals from the outputs of the elements 36 and 37.

The function implemented by node 34 takes the value O in the event that the element 30 in the subsequent cycle is set to the zero state, with

20

In this case, the indicator 33 does not light up, but the value (fig.2a) of the next zero state y, (t + 1) (fig.26). At that time, both the memory element 30 of the second block 6 (not shown) remains in the zero state, both in t (Fig. 2b) and t + 1 cycles (Fig. 2d), which correspond to signals yy (x) .and y (t + 1), and all other elements 30 do not change their state. Then, only at the output of element 161, a single signal 25 appears (fig.2d), which is fed to the input of block 18, highlighting the corresponding LED of indicator 17. However, since all the other inputs of block 18 contain signals O, then its output is a signal O (Fig. 2g), therefore, the trigger 20 remains in the zero (initial) position (Fig. 2h), allowing the passage of signals from the generators 7 and 8 through the switch 10 and element 11 (Fig. 2l) for the operation of the device.

However, if the student made a mistake when building a functional circuit of the automaton, which, when checking the passage of signals, leads to a simultaneous change in the state of more than one element 30, then at the outputs of the corresponding elements 16 (Elenia 1 otherwise, while the indicator 33 is on. Therefore, by reading the information of indicators 33, the learner obtains binary information marked in each cell of the transition-output table without additional operations, only by changing the combination of input signals. This allows t obtain a mathematical model of the synthesized automaton, during the construction of which the learner debugs the automaton using additional indicators 27, displaying the output states of each of the nodes 26. Then checks the fulfillment of the specified operating conditions of the synthesized automaton in the synchronous manual and automatic modes using generators 7 , 8 and switch 10, applying synchronization signals through element 11 to the inputs of elements 30 from switch 3.

The mode for analyzing the correctness of the problem of the non-coding.

The student, typing on the dial-in field 4, a functional diagram of the developed discrete device with the solution of the task of non-coding and building its mathematical model in accordance with the usual mode of operation, connects the first and second outputs of the switches 31 with the appropriate pairs using connecting wires (not shown) the inputs of the switch 15. From the first outputs of the switches 31, the signals y are removed; (t +1) corresponding to the subsequent (predicted) state of the triggers 30, where, n, and from the second outputs of the switches 31 sec o device, signals yj (t) are taken, corresponding to the current state of the flip-flops 30.

thirty

35

40

45

50

55

16 is not shown in Fig. 1) signals 1 (Fig. 2e, e) are received, arriving at the corresponding inputs of block 18 and highlighting the corresponding LEDs of the indicator 17. Block 18 is programmed so that when it arrives at its inputs two or more single signals in any combination leads to the appearance of a single signal at its output (fig.), which translates trigger 20 into a single state (fig. 2h).

In this case, the direct output of the trigger 20 is excited, which delivers the enabling signal to the second input of the element 23, allowing the passage

After that, the fulfillment of the specified operating conditions of the synthesized automaton is checked in the synchronous manual and automatic modes using generators 7, 8 and switch 10, sending synchronization signals through element 11 to the inputs of elements 30 from switch 3 similar to the prototype (normal operation).

Suppose the element 30 of the first block 6 moves from a single current state corresponding to y., (T),

20

25

25

thirty

25

35

40

16 is not shown in Fig. 1) signals 1 (Fig. 2e, e) are received, arriving at the corresponding inputs of block 18 and highlighting the corresponding LEDs of the indicator 17. Block 18 is programmed so that when it arrives at its inputs two or more single signals in any combination leads to the appearance of a single signal at its output (fig.), which translates trigger 20 into a single state (fig. 2h).

In this case, the direct output of the trigger 20 is excited, which delivers the enabling signal to the second input of the element 23, allowing the passage

pulses from the generator 21 (fig. 2i) to block 24 (fig. 2k) o In addition, indicator 22 is displayed,

The signal O from the inverse output of the trigger 20 removes the permission for the passage of the pulses from the generators 7 and 8 to the switching unit 3 through the element (FIG. 2L), thereby blocking the operation of the automaton. After that, student 1 checks the correctness of the problem, turns off the power, re-solves the synthesis problem, dials again the functional circuit on the dial field, and then again checks the execution of the synthesized automaton in the synchronous manual and automatic modes.

formula invented and

A device for learning the basics of computer technology, containing a register, whose inputs are connected to the corresponding keyboard outputs, and outputs to the corresponding inputs of the group of the information presentation unit and the corresponding inputs of the first group of the keypad, the first and second generators, the outputs of which are connected to the corresponding the inputs of the first switch 9 third generation 0

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torus, the output of which is connected to the first input of the composable floor, characterized in that, in order to expand the didactic possibilities and increase the device performance by reducing the time spent on finding training situations, an adder, a group of indicators, a block of permanent memory, the second the switch, the first and second elements And, the trigger, the fourth generator, the sound alarm unit and the indicator, the input of which is connected to the single output of the trigger and one input of the second element And, the output of which is connected to the input b An audible alarm and another input to the output of the fourth generator, the R input of the trigger is connected to the output of the second switch, S-BSK to the output of the fixed memory unit, and the zero output to one input of the first And element, the other input of which is connected to the output of the first switch, and the output to the input of the information presentation unit and the second input of the dialer field, the inputs of the adder are connected to the corresponding inputs of the second group of the dialer field} and the outputs - with the corresponding group indicators and with the corresponding inputs of the block a permanent memory.

Claims (1)

Claim A device for teaching the basics of computer technology, containing a register, the inputs of which are connected to the corresponding outputs of the keyboard and the outputs to the corresponding inputs of the group of the presentation unit and the corresponding inputs of the first group of the typesetting field, the first and second generators, the outputs of which jg are connected to the corresponding inputs of the first switch, the third generator, the output of which is connected to the first input of the dialed field, characterized in that, in order to expand the didactic capabilities and increase The device’s performance by reducing the time spent on searching for training situations, an adder, a group of indicators, a read-only memory unit, a second switch, the first and second AND elements, a trigger, a fourth generator, an audio signal unit and an indicator, the input of which is connected to a single output, are introduced into it trigger and one input of the second element And, the output of which is connected to the input of the sound alarm unit, and the other input to the output of the fourth generator, the R-input of the trigger is connected to the input of the second switch, the S-input is connected to the output om-volatile memory block, and zero output -. with one input of the first AND element, the other input of which is connected to the output of the first switch, and the output is to the input of the presentation unit and the second input of the dialed field, the adder inputs are connected to the corresponding inputs of the second group of the dialed field, and the outputs to the corresponding indicators of the group and to the corresponding inputs of the read-only memory block. a, (th 161 IS tl G ---- Ί a G -------. . G ... 1. in ? . e I ............ 1..721 ⁹ 1 ·...... e L m g 3 1 ’'/./77 11Н11111111111Н111111 | | ||| 1! 111111И1! 11111П11111! 1111111 and ilillllllllllllinilll J! ± 1 L Fig 2 t t G i t t t t t t