ICT for Beginners - session 3 (C&G 4249 iTQ) - Buying a PC
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This document provides an overview of computer hardware and software components. It discusses the processor, RAM, hard drive, graphics card, sound card, and USB card as core hardware. It then compares the specifications and capabilities of £300 and £1000 computers. Key software components covered include the operating system and examples like Windows. Other topics summarized include storage types like ROM, the role of the operating system, a brief history of DOS, and factors to consider when purchasing a computer like intended use and included accessories. The document concludes with an outline of next week's session topics.
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ICT for Beginners - session 3 (C&G 4249 iTQ) - Buying a PC
5. The Processor
or CPU:
The brain of
the computer
Random Access Memory (RAM):
Short term memory used
by the CPU (volatile!)
Hard Drive:
Long term storage
10. £300
Surfing the Web
◦ inc iPlayer etc
eMail
Word Processing
Watch/make DVDs
Basic photo and
video editing
Simple games
£1000
…all of that plus:
Watch/make Blueray
Superfast!
Professional photo
and video editing
High end real-time
gaming
11. They all come with a version of Windows
Operating System (more later…)
– unless you go for an Apple Mac
£300 or £1000 - they won’t look at lot
different on the shelf
Computing power will double every 18 months, but prices
will remain fairly constant
Moore’s Law (1965)
12. You trade power for portability – less bang
for you buck!
Netbooks even more so – but they are only
really intended for surfing and writing
Netbooks don’t even have CD or DVD players
13. Decide what you’re going to use it for – do
you need a laptop? – do you need extreme
power?
Check what you’re getting – often great deals
on desktop don’t include keyboard, mouse,
speakers or even a monitor!
Why pay for Anti-Virus?