Quiz 1

• A program-controlled device, which fetches the instructions from memory, decodes and executes the instructions in

  a computer system.

  Microprocessor
• It carries control signals from the processor to other components. It also carries the clock's pulses and is unidirectional.

  Control bus
• A computer architecture where instruction is simple and designed to get executed quickly.

  RISC or Reduced Instruction Set Computer
• A small amount of high-speed random-access memory (RAM) built directly within the processor.


  Cache
• 8088 Microprocessor can process how many instructions per second?

  2.5 Million
• Listed below are examples of third generation microprocessors except:

  Motorola 68020
• Microprocessor performs three main tasks for the computer system except for:

  translate the high-level language program into machine code.
• An electronic circuit fabricated out of a solid block of semiconductor material.

  Integrated Circuits
• Listed below are features of Microprocessor except for:

  Scalable
• Most microprocessor are single-chip devices and speed depends on the processing speed depends on:


  Data bus width
• What is Fetch – Execute Cycle?

  Cycle that the CPU goes through for each instruction it must execute.
• What is the main function of CPU?

  To fetch instructions from memory, decode them and execute the instructions.
• A CPU that has a clock speed of 5GHZ means, a CPU can carry out ___ fetch decode execute cycles per second.

  5 billion
• What is the first step in the Fetch-Execute Cycle?

  The address of the next instruction is accessed via the Program Counter.
• What is the last step in the Fetch-Execute Cycle?

  The result of the instruction is stored temporarily in the accumulator.
• What happens simultaneously as the data is moved to the Memory Address Register?


  The Program Counter is incremented with the memory address of the next instruction to be fetched.
• What is the role of the Program Counter in the Fetch-Execute Cycle?

  It stores the memory address of the next instruction to be executed.
• What is the role of the Memory Address Register?


  It stores the memory address of the location that is about to be accessed.
• What are registers used for?

  To temporarily hold bits of data needed by the CPU.
• What happens at the Decode step of the fetch-decode-execute cycle?

  The Control Unit makes sense of the instructions.
• The power of the microprocessor is in its capability to execute **billions of millions** of instructions per second from a

  program or software (group of instructions) stored in the memory system. TRUE
• 8085 microprocessor was invented on 1976 and composed of 5,500 transistors. - FALSE: 6,500
• Buses is a common group of wires that interconnect components in a computer system. - TRUE
• The Arithmetic Logic Unit is responsible for the timing and execution of the various register transfers required to fulfill an instruction held in the IR. - FALSE, Control Unit
• The assembly language is converted to machine language by, yet another program called an assembler. - TRUE
• Most microprocessor are single-chip devices and speed depends on the processing speed depends on address bus width. FALSE, data bus
• Data Fetch (DF) is where the data values to be operated on are retrieved from memory. TRUE
• The cache is used to store data that is being worked on by the ALU, and is the key register in the data section of the

  CPU. FALSE, Accumulator
• Registers are super-fast memory, stores tiny instructions which can be accessed by the CPU quickly. TRUE
• EPIC encodes its instruction into 128-bit bundles. TRUE