04 - Computer Systems Flashcards
define a computer system
a system which takes a set of digital inputs, processes them and creates an output
state three input devices
keyboard
barcode reader
mouse
explain the role of a program within a computer system
- provides the CPU with a set of instructions to perform a specific task
what is the role of a data bus?
carries the data around a computer system
what are embedded systems?
where a computer processor is integrated into a device for automatic control
what is a system?
any activity that involves input, processing and outputting data
what is a dedicated system? and give an example
- a computer system dedicated to one task
- controlling one robotic arm in a car factory
what is an embedded system? and give an example
- a dedicated system, park of a larger mechanical/ electrical system
- washing machine controller
what is a general purpose system? and give an example
- many different purposes
- a smartphone (play games, play music, email)
state examples of hardware
- mouse
- keyboard
- CPU
- printer
state examples of software
- operating systems
- applications
how do computer systems communicate with other computer systems?
using interfaces
what is a process used for?
where the data input is converted to a readable form (for the computer)
what is a software?
the program code which is executed on the CPU
what is the mnemonic for remembering the tasks of an operating system?
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