Computer Technology
Central Processor Unit
©2010 Akula LLC,
Jeremy R. Hertzberg,
BS CMPE
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Central Processing Unit (CPU)
©2010 Akula LLC,
Jeremy R. Hertzberg,
BS CMPE
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The basic CPU is composed of five
different elements
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Each element was designed with Gates
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Each Gate was made with transistors
Simple Central Processing Unit
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The five basic CPU elements are:
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©2010 Akula LLC,
Jeremy R. Hertzberg,
BS CMPE
Instruction fetcher
Instruction decoder
Registers
Arithmetic Logic Unit
Memory Unit
Instruction fetcher
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©2010 Akula LLC,
Jeremy R. Hertzberg,
BS CMPE
Picks up the next instruction for the CPU
Instruction decoder
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©2010 Akula LLC,
Jeremy R. Hertzberg,
BS CMPE
Implements the instruction by controlling
the other hardware.
Registers
©2010 Akula LLC,
Jeremy R. Hertzberg,
BS CMPE
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Short term memory
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Holds data for processes, like adding two
numbers.
Arithmetic Logic Unit
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Performs arithmetic functions:
◦ Addition, subtraction, multiplication
◦ Logic functions like AND and OR
©2010 Akula LLC,
Jeremy R. Hertzberg,
BS CMPE
Memory Unit
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©2010 Akula LLC,
Jeremy R. Hertzberg,
BS CMPE
Handles fetching and storing of data