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PC basics
Fichas del conjunto (18)
- 1What is an input device?a device that puts information into a computer
- 2What is an output device?a device that gives you info from something like a computer
- 3What is a storage device?it is something that stores information onto a memory stick or hard drive
- 4What is the purpose of a power supply?it is the component that powers a computer
- 5What is the purpose of the computer case?it keeps all the computer components safe from damage
- 6What is the purpose of the motherboard?it sends messages all around the computer
- 7What is the purpose of the Processor?it is like your brain, it processes are carried out
- 8What is the purpose of the RAM?Random Access Memory also known as RAM is where the currant task is stored. it is like a short memory device
- 9What is the purpose of the Hard Drive?A hard drive is a thing that stores pictures, documents and programmes etc.
- 10What is the purpose of ROMit stores a program used to boot up a computer
- 11What is a repetitive strain injury (RSI) and what causes them?RSI is usually damage to your fingers or wrist over a long period of time
- 12What is the cause of back injuries when using a computer?Often is caused when you sit in an awkward position or poor posture. get a fully adjustable chair to prevent back injuries.
- 13What is eye strain and what is the cause?Eye strain is staring at a computer screen for to long. Also it does not help in poor light or having a flickering screen. For workers, that work with computers, you need to have 5 minute rests every hour.
- 14What is the purpose of Binary?A binary code represents text, computer processor instructions, or any other data using a two-symbol system. The two-symbol system used is often the binary number system's 0 and 1. The binary code assigns a pattern of binary digits, also known as bits, to each character, instruction, etc.
- 15How many bits are in a Binary number?Graphics are also often described by the number of bits used to represent each dot. A 1-bit image is monochrome; an 8-bit image supports 256 colors or grayscales; and a 24- or 32-bit graphic supports true color. nibble: Half a byte – four bits.
- 16Know how to convert from Binary to DenaryTo convert binary into decimal is very simple and can be done as shown below:
Say we want to convert the 8 bit value 10011101 into a denary value; we can use a
formula like that below:
1 0 0 1 1 1 0 1
128,64,32,16,8,4,2,1

As you can see, we have placed the numbers 1, 2, 4, 8, 16, 32, 64, 128 (powers of two) in reverse numerical order, and then written the binary value below.
To convert, you simply take a value from the top row wherever there is a 1 below, and then add the values together.
For instance, in our example we would have 128 + 16 + 8 + 4 + 1 = 157. - 17Know how to convert from Denary to BinaryConverting denary to binary (part 2 of 2) Learn how to convert a denary number into a binary number using the binary place values method, with a worked example. The first thing to do is write the place values in their columns. Then find the largest place value number that fits into your denary number and subtract it.
- 18What devices do you need to connect to the internet?a computer
telephone line (cable being the exception)
modem and/or router
an ISP (Internet Service Provider)
Web browser, eg Internet Explorer, Firefox, Chrome, Safari, Opera etc.
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- Fichas sobre PC basics, creado por Lucas Aydon-Butler el 04/10/2018.
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- Lucas Aydon-Butler
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