Transcript Computer Hardware

Lesson Objectives
• To understand the basic hardware of
computers, and how they are made up
• To be able to compare performance of
computers with price
Computer Hardware
Computer hardware is the physical
components that make up the
computer. This includes
– CPU (Central Processing Unit)
– Memory
– Input devices
– Output Devices
Binary
• Binary is the number system of
computers.
• Think of it like a light switch, it is
either ON or OFF.
• We show this using the numbers 1 and
0.
• 1 for on
• 0 for off
Key Terms
Storage
Bit
1 bit is the size of a 1 or 0
Byte
Kilobyte (KB)
1 byes is string of 8 1s or 0s
Megabyte
(MB)
Gigabyte
(GB)
Terabyte (TB)
1MB is 1024 KB
1 KB is 1024 bytes
1 GB is 1024 MB
1TB is 1024 GB
Computer Specifications
How many of you have bought, or helped your
parents buy, a computer or laptop?
How many of you have been confused by the
specifications of computers?
Computer 1
Computer 2
AMD
Intel Xeon
Processor speed
1.7 GHz
3.4GHz
Cores
2-Cores
6-Cores
1MB
15MB
4GB (8GB Max)
8 GB (64GB Max)
500GB
2TB
Processor
Cache Memory
RAM
Hard Drive
Processor
Processor speed
Cores
Cache Memory
RAM
Hard Drive
Price
Computer
1
Computer 2
AMD
Intel Xeon
1.7 GHz
3.4GHz
2-Cores
6-Cores
1MB
15MB
4GB (8GB
Max)
8 GB (64GB
Max)
500GB
2TB
£279.59
£2,199.99
These are 2 different
types of CPU/Processor
manufacturer
This is how many billions
of processes it can run
per second.
This essentially means the
amount of processing
circuits/CPUs that can run
at one time
Cache (“Cash”) memory is
built into the CPU and is
therefore SUPER fast but
SUPER expensive
RAM is quick memory
which is used to run
applications and
programs
The hard drive is the
amount of physical data
which can be stored.
Task 1:
• Use the internet to find the MOST and
LEAST expensive computers.
• Rules:
– Desktop computers only – no laptops
– May or may not include screen
• Complete the work sheet. Make sure
you compare the features of each
Task 2:
• Use the internet to find computers for
potential clients.
• Your aim is to find the best value for
money. Make sure you shop around,
and try different websites.
Homework
Produce a 100 word summary on one of
the following topics. It MUST be in your
own words.
• Colossus -1943
• “Baby” – 1948
• John Von Neumann – 1945