computer systems Flashcards
What is a______?
• Consist of devices, programs and operating aids procedures required to prepare and process data and the personnel who keeps these elements effectively and efficiently functioning.
computer system
• It accepts data as input and processes it to provide us with an output, such as information or a physical action.
• But it can only follow the instructions that we give it.
computer system
laptop, camera, computer, cp, washing machine, oven
ex of computer system
• A computer system accepts data and instructions at the ____ stage.
•___ devices, such as a keyboard or sensor, are used to collect and provide the computer system with data or instructions.
input
____ is a collection of facts about something or somebody.
data
• This ____ can be used in many different ways to provide information about you.
data
• It could be a collection of numbers, letters, dates, images and sound.
• For example, your height, age, shoe size, hair colour and gender etc is ___.
data
• Data and instructions are _____ by a_________ (CPU).
processed
central processing unit
• A ____ is the computer system’s brain that can transform data from input devices into useful information or a physical action.
CPU
• The ____ can process data really fast but it can’t think for itself. It only does what it is told to do by following instructions.
CPU
• Data becomes ____ when it is put into context (i.e. given meaning).
• A barcode number is just data on its own. So is the product name, image and price.
• But this data becomes meaningful ______ when the data is put together.
• When a barcode is scanned, we can find out what item it is, what it looks like and how much it will cost.
information
- An ____ is when the computer communicates the results of the processed data.
output
• The data has been transformed into useful information that we can see and use.
• This information is usually shown on a display monitor or paper printout and it should be easy for us to understand.
Output
common input devices
keyboard
mouse
remote
game controller
head mic
scanner
dvd device
common output devices
printer
speaker
laptop
computer
head mic
traffic light
Raspberry Pi Computer Parts