Computer Science Intermediate Level is intended for young students studying the BTEC Level 3 Diploma in IT as it has necessary helpful information and facts about fundamental computer science concepts but can also be read by people who want to learn more about computer related topics.
-Provides details of the different type of components that make up a PC
-Explains in-depth information about different networking protocols
– Describes the different types of programming paradigm
-Contains information that will boost your BTEC grade
Targeted Age Group:: 17
What Inspired You to Write Your Book?
What inspired me to write this book was the fact that there are not really many books out there which are geared towards helping people with their BTEC, asides from the text book and even that doesn't cover all the units.
Computer systems are made up of several different components. These components are known as hardware as they are things that you can physically touch rather than software which is what you see on a screen. These are the CPU, fan, sound card, graphics card, motherboard, memory, power supply unit, optical drive and hard disk drive.
CPU means Central Processing Unit and this piece of hardware is a chip placed on the motherboard responsible for dealing with commands from the computer’s hardware and software, it is the brains of the computer. The CPU is made of lots of transistors that do calculations
The motherboard is the main printed circuit board of a computer it is like the ‘mother’ of the computer as it holds all the pieces of the computer together, attached to the motherboard are USB ports, the CPU, ROM, RAM and PCI slots.
There are two times of memory there is RAM and ROM, RAM stands for Random Access Memory and ROM which stands for Read-Only Memory. RAM is responsible for temporarily storing data and allows tasks to be done simultaneously. It allows quick access to recently viewed data; the more memory the computer has, the more programs it can have open at the same time. ROM is memory that is permanently fixed and can’t be changed. ROM retains its memory even after the computer is turned off. BIOS stands for Basic Input/ Output System and is a ROM chip. The ROM contains the programming used to instruct the computer to turn on.
The power supply unit is compulsory for the computer system as it supplies power to all the components of the computer, it converts AC current from the mains into DC current which the components require.
The sound card converts signals into sounds that can be played through speakers, most motherboards have a sound card built in.
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