Digital Electronics-Memory and Storage

Digital Electronics-Memory and Storage
51. How many 1K × 4 RAM chips would be required to build a 1K × 8 memory system?
  • 2
  • 4
  • 8
  • 16
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52. Digital Electronic-Memory and Storage
  • SRAM
  • DRAM
  • ROM
  • FIFO
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53. Which of the following faults will the checkerboard pattern test for in RAM?
  • Short between adjacent cells
  • Ability to store both 0s and 1s
  • Dynamically introduced errors between cells
  • All of the above
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54. On a CD-ROM, ________ are raised areas representing a 1.
  • mounds
  • lands
  • holes
  • pits
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55. The location of a unit of data in a memory array is called its ________.
  • storage
  • RAM
  • address
  • data
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56. On a CD-ROM, ________ are recessed areas representing a 0.
  • mounds
  • lands
  • holes
  • pits
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57. Why is a refresh cycle necessary for a dynamic RAM?
  • to clear the flip-flops
  • to set the flip-flops
  • The refresh cycle discharges the capacitor cells.
  • The refresh cycle keeps the charge on the capacitor cells.
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58. Which is not a magnetic storage device?
  • Magnetic disk
  • Magnetic tape
  • Magneto-optical disk
  • Optical disk
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59. The time from the beginning of a read cycle to the end of tACS or tAA is referred to as:
  • access time
  • data hold
  • read cycle time
  • write enable time
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60. Which of the following memories is volatile?
  • ROM
  • EROM
  • RAM
  • Flash
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Digital Electronics
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