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Tenth Grade (Grade 10) PC Basics Questions

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Grade 10 PC Basics
Grade 10 PC Basics
To which register(s) is instruction copied in the fetch process?
  1. MDR only
  2. To MDR first and then, to CIR
  3. To MDR first and then, to PC
  4. MAR only
Grade 10 PC Basics
Which of the following operations are NOT performed by the Arithmetic and logic unit?
  1. Addition, subtraction and multiplication
  2. READ and WRITE operation
  3. AND, OR and NOT
Grade 10 PC Basics
What is the function of a control bus?
  1. Transmits timing, status signals and commands between processor, memory and I/O devices.
  2. Controls the amount of data to be stored in memory.
  3. Controls the amount of data transmitted between the processor, memory and input-output devices.
Grade 10 PC Basics
Which of the following is TRUE about the WRITE operation?
  1. Contents of memory are copied to MDR
  2. Contents of MDR are copied to memory
  3. Contents of memory are copied to MAR
  4. Contents of MAR are copied to memory
Grade 10 PC Basics
Which of the following bus is unidirectional?
  1. Address bus
  2. Control bus
  3. Data bus
Grade 10 PC Basics
What is the function of the current instruction register?
  1. CIR contains the next instruction to be executed.
  2. CIR contains the instruction that is executed currently.
  3. CIR contains the address of the next instruction that is to be executed.
  4. CIR contains the address of the instruction that is currently executed.
Grade 10 PC Basics
What is the function of the program counter?
  1. PC contains the next instruction to be executed.
  2. PC contains the instruction that is executed currently.
  3. PC contains the address of the next instruction that is to be executed.
Grade 10 PC Basics
What is the function of the Memory Address Register (MAR)?
  1. Stores the data for read/write operations.
  2. Stores the address of the data for read/write operations.
  3. Stores the sum of two bits when they are added.
Grade 10 PC Basics
Grade 10 PC Basics
Which of the following has its operation similar to that of a switch?
  1. Actuator
  2. Analog to Digital converter
  3. Sensor
  4. Digital to Analog converter
Grade 10 PC Basics
How many bits is present in 1 GiB?
  1. 2^10 bits
  2. 8 × 2^20 bits
  3. 8 × 2^30 bits
  4. 1024^3 bits
Grade 10 PC Basics
Which of the following statement is FALSE about ASCII character coding?
  1. The character codes of upper case characters have a smaller value when compared to lowercase characters.
  2. The ASCII code of uppercase characters starts at hex value 41
  3. The ASCII code of lowercase characters starts at hex value 60
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