15294490
Description
Flashcards by Caitlin Watt, updated more than 1 year ago
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Created by Caitlin Watt
over 5 years ago
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| Question | Answer |
| What is an input device ??? | An input device is a device that is used to input information and text in to a computing system. |
| what is an output device? | An output device is used ton draw information from a computing system. |
| what is the purpose of a power supply | The type of power computers need is low-voltage DC. |
| What is the purpose of the computer case? | A computer system unit is the enclosure that contains the main components of a computer. |
| What is the purpose of a storage device?? | The purpose of storage devices is to store data and software for later use. |
| What is the purpose of the motherboard? | It holds together many of the crucial components of a computer. |
| What is the purpose of the RAM? | RAM (Random Access Memory) is the hardware 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. |
| what is the purpose of ROM ????? | stores a program to boot up the computer this is called the bootstrap loader |
| what is the purpose of a hard drive ??? | A hard disk drive (HDD), hard disk, hard drive or fixed disk is a data storage device that uses magnetic storage to store and retrieve digital information using one or more rigid rapidly rotating disks (platters) coated with magnetic material. |
| What is a repetitive strain injury (RSI) and what causes them? | a condition in which the prolonged performance of repetitive actions, typically with the hands, causes pain or impairment of function in the tendons and muscles involved. is a gradual buildup of damage to muscles, tendons, and nerves from repetitive motions |
| What is the cause of back injuries when using a computer? | Usually due to poor posture or sitting in an awkward position when using a computer. |
| What is eye strain and what is the cause? | Usually caused by staring at a computer screen for a long time. Particularly in poor light, in glare or with a flickering screen. |
| By law, what do employers have to provide for their employees? (in regards to working with computers) | tiltalble screens anti-glare screen filters adjustable chairs foot supports suitable lighting workstations are not cramped when working on a computer staff take frequent breaks appropriate eye and eyesight tests by an optician |
| What is the purpose of Binary? | a binary code presents text computer processor instructions or any other way using a two way system |
| How many bits are in a Binary number? | there are two bits 0 and 1 |
| device needed to use to connect to the internet?? | PC , network interface card , router , modem |
| know how to convert denary to binary??? | Get a denary number and transfer it in to binary |
| know how to convert binary to denary | get a set of binary and transfer it in to denary |
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