Digital Computer Fundamentals - Questions & Answers for Competitive Exams | GkSeries

49. A flip flop is a _________.

• [A] storage device.
• [B] hub.
• [C] bistable device.
• [D] chip.

Answer: Option [C]

50. The simplest register is ________.

• [A] buffer register.
• [B] shift register.
• [C] controlled buffer register.
• [D] bidirectional register.

Answer: Option [B]

51. In synchronous counter all flip flops are _________.

• [A] clocked simultaneously.
• [B] not clocked simultaneously.
• [C] initially clocked.
• [D] all of the above .

Answer: Option [A]

52. How many AND gates does the SR flip flop require at its inputs?

• [A] 1
• [B] 4
• [C] 2
• [D] 3

Answer: Option [C]

53. Which of the following have the fastest access time?

• [A] Semiconductor Memories.
• [B] Magnetic Disks.
• [C] Magnetic Tapes.
• [D] Compact Disks.

Answer: Option [A]

54. EPROM is erased by __________.

• [A] red light.
• [B] red light.
• [C] ultra violet rays.
• [D] infra-red rays.

Answer: Option [C]

55. Which of the following does not represent an I/O device?

• [A] Speaker which beeps.
• [B] Joy-stick
• [C] Plotter.
• [D] ALU.

Answer: Option [D]

56. Which of the following is associated with Optics?

• [A] Winchester disk.
• [B] RAM
• [C] CD-ROM.
• [D] CPU

Answer: Option [C]

57. What is the keyboard's official name?

• [A] <"poiut"./li>
• [B] "asdfg".
• [C] "qwerty".
• [D] "alphanumeric".

Answer: Option [C]

58. Which of the following is an input device?

• [A] Scanner
• [B] Speaker
• [C] CD
• [D] Printer.

Answer: Option [A]

59. The fastest and quietest type of printer is _________.

• [A] dot-matrix printer.
• [B] inkjet printer.
• [C] laser printer.
• [D] plotter.

Answer: Option [C]

60. Best Quality graphics is produced by _________.

• [A] dotmatrix
• [B] laser
• [C] plotter
• [D] inkjet

Answer: Option [B]