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PC Basics
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- 1What is an input device?A gadget that inputs a signal to another device. e.g Mouse, Keyboard and scanner.
- 2What is an output device?A output device is a gadget that outputs something. e.g printer, monitor and speaker.
- 3What is a storage device?a piece of computer equipment on which information can be stored. e.g SD card, memory card, memory stick & hard drive.
- 4What is the purpose of a power supply?The main functions of a power supply include the following: Convert AC to DC. Provide DC voltage to the motherboard and adapters.
- 5What is the purpose of the computer case?A computer case, also known as a computer chassis, tower, system unit, cabinet, base unit, or simply case, is the enclosure that contains most of the components of a computer and stops the computer from getting damaged.
- 6What is the purpose of the motherboard?A motherboard is one of the most essential parts of a computer system. It holds together many of the crucial components of a computer, including the central processing unit (CPU), memory and connectors for input and output devices.
- 7What is the purpose of the Processor?he most important component of a computer is the central processing unit, or CPU, also called the processor. The processor acts as the computer's brain, running programs and sending and receiving signals to attached devices to keep the computer running.
- 8What is the purpose of the RAM?RAM (random access memory) is the place in a computing device where the operating system (OS), application programs and data in current use are kept so they can be quickly reached by the device's processor. The Data remains in RAM as long as the computer is running. When the computer is turned off, RAM loses its data.
- 9What is the purpose of ROM?Once data has been written onto a ROM chip, it cannot be removed and can only be read. Unlike main memory (RAM), ROM retains its contents even when the computer is turned off. ROM is referred to as being nonvolatile, whereas RAM is volatile.
- 10What is the purpose of the Hard Drive?The hard drive is where the computer stores all of the memory which doesn't get lost even if it gets turned off.
- 11What is a repetitive strain injury (RTI) and what causes them?Repetitive strain injury (RSI) is a general term used to describe the pain felt in muscles, nerves and tendons caused by repetitive movement and overuse. It's also known as work-related upper limb disorder, or non-specific upper limb pain.
- 12What is the cause of back injuries when using a computer?The cause of back injuries whilst using a computer is having a non-adjustable chair or sitting in a awkward position.
- 13What is eye strain and what causes it?Eye strain is where you hurt your eyes or damage for being on a computer for to long.
- 14By law, what do employers have to provide for their employees? (in regards to working with computers)Tiltable chairs
anti-glare screen filters
adjustable chairs
foot supports
suitable lighting
work stations are not cramped
frequent brakes
appropriate eye and eyesight tests by an optition - 15What is the purpose of binary?A binary code represents text, computer processor instructions, or other data using any two-symbol system, but often the binary number system's 0 and 1. The binary code assigns a pattern of binary digits (bits) to each character, instruction, etc.
- 16How many bits are in a Binary number?There is usually 8 bits in a binary number also known as a byte but for bigger numbers you would need more bits.
- 17What 4 devices are needed to connect to the internet?A modem
A laptop/PC
A router
Internet
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