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LAB WORK PERFORMANCE.

 

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


Date: 2015-12-11; view: 618


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