CSCI 1006 Lecture Notes - Lecture 14: Arithmetic Logic Unit, Address Bus, Circuit Complexity
21 Sep 2016
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the rest of the circuitry of the computer
, passing along program instructions and data to the registers of the control unit and ALU.
It matches the signal levels and timing of the microprocessor’s internal solid-state circuitry
to the requirements of the other components in the computer. It links the microprocessor
to
10. Explain the affect of bus width on the two internal microprocessor buses.
Bus width affects the two internal microprocessor buses as the address bus is the
connections that indicates the address of memory locations to or from which the
microprocessor will send or receive data or instructions and the data bus is the
connections that convey the meaning of the data or instructions; thus, the speed of the
microprocessor affects these two buses (see definition of bus width above).
11. Discuss the purpose of a modern control unit.
A modern control unit controls the operation of the entire microprocessor chip and is
quite flexible in its functions. It follows the instructions in an external program and tells the
ALU what to do; it also receives instructions from the I/O unit and translate them into a
form tat can be understood by the ALU. Moreover, it keeps track of which step of the
program is being executed.
12. What is the function of the arithmetic logic unit?
The ALU handles all the decisions making that are performed by the microprocessor
such as the mathematical computations and logic functions. It also takes the instructions
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Document Summary
The rest of the circuitry of the computer. , passing along program instructions and data to the registers of the control unit and alu. It matches the signal levels and timing of the microprocessor s internal solid-state circuitry to the requirements of the other components in the computer. Explain the affect of bus width on the two internal microprocessor buses. Discuss the purpose of a modern control unit. A modern control unit controls the operation of the entire microprocessor chip and is quite flexible in its functions. It follows the instructions in an external program and tells the. Alu what to do; it also receives instructions from the i/o unit and translate them into a form tat can be understood by the alu. The alu handles all the decisions making that are performed by the microprocessor such as the mathematical computations and logic functions.
