

UNIT 2.2 CENTRAL PROCESSING UNIT
Presentation
•
Computers
•
8th Grade
•
Practice Problem
•
Hard
Nausheen Kamran
Used 30+ times
FREE Resource
16 Slides • 2 Questions
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UNIT 2.2 CENTRAL PROCESSING UNIT

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THE CENTRAL PROCESSING UNIT
KNOWN AS PROCESSOR
JUST AS WE HAVE OUR BRAIN COMPUTERS HAVE PROCESSOR.
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Analogy
comparison of human and computer
brain
input
output
operating system
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Functions of CPU
process instructions of the software ( for example in loading a program)
handle control signals coming for example coming from input and output devices
carry out arithmetic and logical operations
to store data
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Two parts of CPU
Arithmetic and logic unit (ALU)
Control unit (CU)
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CPU
CPU is a chip
made up of transistors
transistors are like switches
the transistor turns on and off to store binary values
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Fill in the Blanks
Type answer...
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How Computers
Represent Data
•Binary numbers
oOnly 0s and 1s
•Bit
oSmallest piece of data a computer can work with
oEither “on” or “off,” a 0 or a 1
oEight bits—byte—a single unit of storage
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Fill in the Blanks
Type answer...
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What is the formula to calculate speed ?
How can we measure computer's speed?
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SPEED
no of instructions/ second
measured in Hertz
Ghz or Mhz.
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Video on inside the computer unit.
https://www.youtube.com/watch?v=HB4I2CgkcCo
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Inside the System Unit
Motherboard
CPU
Power supply
Cooling fan
Expansion slots
RAM
BIOS/ ROM
hard drive
I/O ports
clock chip
CD/DVD Drive
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UNIT 2.2 CENTRAL PROCESSING UNIT

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