Practical Digital Electronics for Technicians 1st. Edition by Will Kimber | 9780750618410 | 0750618418 | Holooly

Digital Electronics

Practical Digital Electronics for Technicians

102 SOLVED PROBLEMS

Question: 7.Q.11

How many clock pulses does it take for: (a) the data ABCD = 1101 to be fully stored in the register (b) the register to be empty? ...

Verified Answer:

See Figure A.17.

Question: 8.PE.1

To investigate the Schmitt trigger using (a) the 741 operational amplifier ic, (b) the 7414 Schmitt trigger ic For this exercise you will need the following components and equipment: 1 – 741 ic (operational amplifier) 1 – 74LS14 ic (hex inverting Schmitt trigger) (six Schmitt triggers in one ...

Verified Answer:

Procedure (a): using the 741 operational amplifier...

Question: 7.PE.8

To investigate the universal shift register For this exercise you will need the following components and equipment: 1 – 74LS194 ic (4-bit universal shift register with positive edge triggering) 4 – LED (5 mm) and resistor (270 Ω) 1 – +5 V dc power supply The pin connections for the 74194 are shown ...

Verified Answer:

Procedure (a): serial in-parallel out 1 Clear the ...

Question: 7.PE.7

To investigate the 4-bit parallel load shift register For this exercise you will need the following components and equipment: 2 – 74LS76 ic (dual JK flipflop) 4 – LED (5 mm) and resistor (270 Ω) 1 – +5 V dc power supply ...

Verified Answer:

1 Connect up the circuit shown in Figure 7.20. Ref...

Question: 7.PE.6

To investigate the 4-bit serial load shift register using D flipflops For this exercise you will need the following components and equipment: 2 – 74LS74 ic (dual D flipflop) 4 – LED (5 mm) and resistor (270 Ω) 1 – +5 V dc power supply The circuit is shown in Figure 7.17 and the pin connections for ...

Verified Answer:

Procedure 1 Clear the register by setting all the ...

Question: 7.Q.12

Complete the waveform (timing) diagrams shown in Figures 7.25 and 7.26. ...

Verified Answer:

See Figure A.18.

Question: 7.Q.13

Complete the waveform (timing) diagrams shown in Figures 7.25 and 7.26. ...

Verified Answer:

See Figure A. 19.

Question: 7.Q.9

A certain 4-bit shift register uses a clock frequency of 4 MHz. What time is needed to load the register (a) in series (b) in parallel? How many clock pulses are needed for each method respectively? ...

Verified Answer:

(a) 1 μs , 4 (b) 0.25 μs , 1

Question: 7.Q.6

A 4-bit shift register reads ABCD = 1011. List the contents of the register (as ABCD) shifting right, after (a) one clock pulse (b) two clock pulses (c) three clock pulses (d) four clock pulses ...

Verified Answer:

6 (a) 0101 (b) 0010 (c) 0001 (d) 0000

Question: 8.Q.3

Refer to Figure 8.3. 3 For a fixed value of R2 how does the hysteresis depend upon the value of R1? ...

Verified Answer:

3

R_{1}

decreases, hysteresis decre...

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