Mid-Term Exam
Version 1
Note: All the questions carry equal weight.
Question 1:
(a) How is the number four (4) indicated on the outputs of a BCD-to-seven-segment
decoder/driver?
(b) How is the number one (1) indicated on the outputs of a BCD-to-seven-segm
QUIZ 3
Version 3
Question 1:
Develop the truth table for the following Boolean expression:
X A B C
Question 2:
Simplify the Boolean expression given as:
X AB A AC
Question 3:
Develop a logic diagram to implement the following Boolean expression:
X B C DE
QUIZ 4
Version 3
Question 1:
A Parallel-in/Serial-out shift register is loaded initially with 0100. What will the register contain
after two clock pulses if the serial input is HIGH?
Clock 1 1010
Clock 2 1101
Question 2:
What are the four operating modes
Mid-Term Exam
Version 3
Note: All the questions carry equal weight.
Question 1:
Simplify the following Boolean expression:
Y AB AC BC
= (A + B + A + C) BC
=ABC
Question 2:
How many two-input NAND gates are in a 14-pin DIP integrated circuit?
Vcc
GND
Vcc
Q
QUIZ 5
Version 3
Question 1:
What is the maximum numerical value out of a binary counter having 6 flip-flops?
6
2 =64, due recycle the max number is 63
Question 2:
How many flip-flops are needed to construct a counter which counts from 0 to 19?
5
2 =trunc
Compare and contrast an asynchronous counter with a synchronous counter.
COMPARISION AND DIFFERENCES BETWEEN SYNCHRONOUS AND ASYNCHRONOUS COUNTERS;
1) In asynchronous counters, the first flip-flop is clocked by the external clock pulse and then each
succe
Contrast and compare how the operation of a serial-in/serial-out shift register differs with that
of a parallel-in/parallel-out shift register.
The serial in/serial out shift register accepts data seriallythat is, one bit at a time on a single line. It
p
Excelsior College
ELEC201 Digital Electronics
Module 3: Laboratory 2B: Shift Registers
Objectives
The objectives of this experiment are to:
Examine how flip flops are combined to make shift registers.
Examine the operation of a pseudorandom number generat
Excelsior College
ELEC201 Digital Electronics
Module 5: Laboratory 2: Arithmetic Circuits and Comparators
Objectives
The objectives of this experiment are to:
Examine how addition and subtraction are performed using logic gates.
Examine how binary numbers
QUIZ 1
Version 3
Answer the following questions. Show your work clearly.
1. How is 127 decimal represented in 8-bit 2s complement notation?
2. Solve the following problem:
(1000)2
x (0011)2
3. Solve the following problem:
(00110110)2
- (00011111)2
4. Solv