1. Demonstrate presence of your home preparation for lab work to your instructor.
2. Pass test of 10 questions.
3. Get a permission to begin the work.
4. Mount the scheme of experiment 6 on the breadboard and perform it.
5. Make a conclusion about functionality of the scheme. Compare your results with theoretical ones.
6. Demonstrate your results to your instructor. If your results are correct you may dismount your scheme, if no – find the mistake.
7. Be ready to answer your instructor’s questions in process of work.
8. Complete your work, dismount your schemes, clean your working place.
9. Answer your instructor’s final questions, obtain your mark.
10. Ask your instructor’s permission to leave.
Experiment 6. Realize the circuit on a breadboard. For 2-input AND take 7408, pins 1,2-inputs, pin 3 output. For 2-input OR take 7432, pins 1,2,4,5-inputs, pins 3,6-outputs. Fill in the tables. Connect pin 5 of 7483 to VCC and pin 12 – to GND. Show ONs or OFFs for LEDs. Tasks for addition:
options
Inputs of basic adder
Outputs of basic adder
L1
L2
L3
L4
L5
L6
L7
L8
L9
L10
L11
L12
L13
L14
5+9
7+8
4+3
options
Inputs of correction adder
Outputs of the circuit
L15
L16
L17
L18
L19
L20
L21
L22
L23
5+9
7+8
4+3
Conclusion:
TEST QUESTIONS
1. The content of register when we enter 249 in BCD is:
A
B
C
D
E
2. A small-scale integration (SSI) device contains __________ gates in a single chip.
A. thousands of B. From10 to 1000 C. More than 100 D. From 10 to 100 E. less than 10
3. Number of functions of n variables can be determined according to the formula
A. B. 22n C.2n D. E. 23n
4. A half-subtractor is a ________ circuit, that subtracts ________ bits and produces their difference.
A.sequential; three B. sequential; two C. combinational; two