11791929
Description
Flashcards by Emily Whitley, updated more than 1 year ago
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Created by Emily Whitley
over 6 years ago
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| Question | Answer |
| what is an input device? | an input device is any device that sends data to a computer, allowing you to control the computer. for example a keyboard. |
| what is an output device? | an output device is any device used to send data from a computer to another device or user. Most computer data output is in the form of audio or video. |
| what is a storage device? | a storage device is a device that can store data for when you need it for example a memory card. |
| what is the purpose of the power supply? | a power supply is an component that supplies components in a computer with power |
| what is the purpose of the computer case? | the computer case is there to protect your computer and to keep all of the components of your computer together. |
| what is the purpose of the motherboard? | 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. |
| what is the purpose of 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. |
| what is the purpose of the RAM? | RAM (random access memory) is where, application programs and data in current use are kept so they can be quickly reached by the device's processor. |
| what is the purpose of ROM? | Stores a program used to boot up the computer. This is called the bootstrap loader |
| what is the purpose of the Hard Drive? | the hard drive is where all of your documents,pictures,programs are stored on your computer |
| what is repetitive strain injury and how is is caused? | it is usually damage to the fingers and wrists caused by repeated movement over a long period of time |
| what is the cause of back injuries when using a computer? | it is caused by having poor posture an sitting in an awkward position. |
| what is eye strain and what is the cause? | where your eyes are damaged or hurt and is usually caused by staring at a screen for a long time especially in poor light, in glare or a flickering screen |
| by law, what do employers have to provide for their employees? (in regards to working with computers) | they have to provide anti-glare screen filters, adjustable chairs, foot supports, suitable lighting, workstations are not cramped and staff get to take frequent breaks when working on a computer |
| what is the purpose of Binary? | computers store , communicate and share data using 1's and 0's |
| What 4 devices are needed to connect to the internet? | telephone line modem or router. an Internet Service Provider Web browser, |
| how many bits are in a binary number? | 8 |
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