Flashcards
flashcards revision must do
Cards in this deck (21)
- 1Give me an example of an input device ?keyboard
mouse - 2What is an output devicea device that you can get things from or you can touch
- 3Give me an example of an output deviceMonitor
printer
disc reader - 4Which of the following is a storage device ? Printer USB/memory stick Monitor KeyboardUSB/Memory stick
- 5What is a storage device ?Something that stores tings in it.
- 6What is the purpose of a power supplyTO power the computar
- 7What is the prpose of a computer caseTo hold the main pats ( motherboard etc) together
- 8What is the purpose of the mother board ?To hold all things/parts together.
- 9What is the purpose of the processor?Its like your brain
it processes all your thoughts - 10What is the purpose of the RAM?Random Access Memory (RAM) is where the computer stores the current task that is being carried out. This is like your short term memory when you are thinking about what you are about to say of have just eaten.
- 11What is the purpose of the hard drive?The hard drive is where all of your documents, pictures, programmes etc. are stored on the computer, similar to all of the long term memories in your brain.
- 12What is a repetitive strain injury (RSI) and what causes them?IT is where your muscles hurt if you do something too much or typing
- 13What 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. - 14What 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. - 15By law, what do employers have to provide for their employees? (in regards to working with computers)tiltable 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 - 16What is the purpose the binary?so computers can store data.
- 17How many bits are in binary?8
- 18Know how to convert from binary to Base TenBi
- 19How many bits are in binary8
- 20How do you convert binary to denaryThe binary number 00000111 is 7 in denary
- 21How do you convert from denary to binary00000101 is 5