Practice Test: Question Set - 02
1. Computers use thousands of flip-flops. To coordinate the overall action, a common signal called the _______ is sent to each flip-flop.
- (A) Latch
- (B) Clock
- (C) Master
- (D) Slave
2. An odd-parity generator produces an odd-parity bit to go along with the data. The parity of the transmitted data is _______ An XOR gate can test each received word for parity rejecting words with _______ parity.
- (A) Odd, even
- (B) High, low
- (C) Low, high
- (D) Even, odd
3. Conversion of an octal number 478 to its binary number is
- (A) 1100112
- (B) 1001112
- (C) 1100112
- (D) 11110112
4. A NOR gate recognizes only the input word whose bits are _______
- (A) 0's and 1's
- (B) 1's
- (C) 0's
- (D) 0's or 1's
5. A binary adder is a logic circuit that can add _______ binary numbers at a time.
- (A) Hundreds
- (B) Thousands
- (C) One
- (D) Two
6. The maximum count which a 6-bit binary word can represent is
- (A) 36
- (B) 63
- (C) 64
- (D) 65
7. Express 8192 in K units.
- (A) 8 × 103 K
- (B) 8.192 k
- (C) 8 K
- (D) None of the
above
8. The _______ is ultraviolet-light-erasable and electrically programmable. This allows the user to erase and store until programs and data are perfected.
- (A) EPROM
- (B) ROM
- (C) PROM
- (D) RAM
9. Why are digital circuits easier to design than analog circuits?
- (A) They do not
control electricity precisely over a wide range
- (B) They are
made in the form of ICs
- (C) All elements
of digital circuit are from the same family
- (D) They are
smaller in size
10. A microcomputer is a computer that uses a _______ for its CPU.
- (A) Chips
- (B) Registers
- (C) Microprocessor
- (D) Vacuum tube
11. Which of the following is not functionally a complete set?
- (A) AND, OR
- (B) NAND
- (C) NOR
- (D) AND, OR, NOT
12. If a microcomputer has a 64K memory, what are the hexadecimal notations for the first and last memory location?
- (A) 0000, EEEE
- (B) 0, 64
- (C) 0000, FFFF
- (D) 0000, 9999
13. Conversion of decimal number 9310 to hexadecimal number is
- (A) 2D16
- (B) 5D16
- (C) 6216
- (D) 3116
14. The leading bit stands for the _______ and the remaining bits for the _______ is known as signed binary numbers.
- (A) Sign,
remainder
- (B) Sign,
magnitude
- (C) Value, sign
- (D) Variable,
value
15. The ASCII code is a 7-bit code for
- (A) Letters
- (B) Numbers
- (C) Other
symbols
- (D) All
of the above
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