# Practice Test: Question Set - 07

**1. Binary-Coded-decimal (BCD) numbers express each digit as a _______**

- (A) Byte

- (B) Nibble

- (C) Bit

- (D) None of the
above

**2. A shift register moves the _______ left or right. Serial loading means storing a word in a shift register by entering _______ bit per clock pulse. With parallel or broadside loading, it takes only one _______ pulse to load the input word.**

- (A) Light,
eight, clock

- (B) Right,
eight, clock

- (C) Bits, one,
register

- (D) Bits, one,
clock

**3. Conversion of an octal number 7432**

_{8}to a binary number is- (A) 1111000110111

_{2}

- (B) 111100011010

_{2}

- (C) 110011010111

_{2}

- (D) 111111111000

_{2}

**4. Conversion of an octal number 106**

_{8}to binary number is- (A) 1110010

_{2}

- (B) 1000110

_{2}

- (C) 1100110

_{2}

- (D) 10000110

_{2}

**5. What logic function is produced by adding an inverter to the output of an AND gate?**

- (A) NAND

- (B) NOR

- (C) XOR

- (D) OR

**6. Names, numbers, and other information needed to solve a problem are called _________**

- (A) Program

- (B) Instruction

- (C) Data

- (D) Controls

**7. Multiplication of 111**

_{2}by 101_{2}is- (A) 110011

_{2}

- (B) 100011

_{2}

- (C) 111100

_{2}

- (D) 000101

_{2}

8. How many full and half-adders are required to add 16-bit numbers?

- (A) 8
half-adders, 8 full-adders

- (B) 1
half-adders, 15 full-adders

- (C) 16
half-adders, no full-adders

- (D) 4
half-adders, 12 full-adders

**9. Semiconductor memory is:**

- (A) Somewhat
slower than magnetic core memory

- (B) A volatile
memory

- (C) Somewhat
larger than the magnetic core memory

- (D) None of the
above

**10. Conversion of decimal number 42**

_{10}to it's octal number equivalent is- (A) 57

_{8}

- (B) 42

_{8}

- (C) 47

_{8}

- (D) 52

_{8}

**11. How many memory locations can 14 address bits access?**

- (A) 16,384

- (B) 8,192

- (C) 4,096

- (D) 14

**12. Conversion of binary number 1100001**

_{2}to hexadecimal is- (A) 57

_{16}

- (B) 61

_{16}

- (C) 51

_{16}

- (D) 43

_{16}

**13. The dynamic race hazard problem occurs in**

- (A) Combinational
circuits only

- (B) Sequential
circuits only

- (C) Both
combinational and sequential circuits

- (D) None of the
combinational and sequential circuits

**14. Conversion of binary number 1001010**

_{2}to to its decimal number is- (A) 74

_{10}

- (B) 97

_{10}

- (C) 72

_{10}

- (D) 63

_{10}

**15. Conversion of binary number 1010000**

_{2}to an octal number is- (A) 119

_{8}

- (B) 101

_{8}

- (C) 111

_{8}

- (D) 120

_{8}

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