Introduction to Computer Systems
Review these notes. For maximum benefit, go through these notes interactively, thinking about and answering the questions at the bottom of each page. These notes are an experiment in applying the "programmed learning" method to web-based computer aided instruction. The subject is Java Programming for beginning programmers. The content is intended to start beginning programmers out on the track to professional-level programming and reinforce learning by providing abundant feedback. Java is a programming language that is used often in professional practice.
Components of a Computer System
Answer:
No. You have destroyed a particular physical book, but not the information that is the novel Tom Sawyer. (You will still have to write that book report.)
Components of a Computer System
Information is funny stuff. The information for the web page you are looking at is recorded on a hard disk inside a computer located in New Britain, Connecticut. The information was copied from that physical device to other physical devices perhaps hundreds of times before it got to your computer where your web browser is using it to display these words on your monitor. Clearly information is something different from the devices used to store and transmit it.
A computer system consists of both hardware and information stored on hardware. Information stored on computer hardware is often called software.
The hardware components of a computer system are the electronic and mechanical parts.
The software components of a computer system are the data and the computer programs.
The major hardware components of a computer system are:
- Processor
- Main memory
- Secondary memory
- Input devices
- Output devices
For typical desktop computers, the processor, main memory, secondary memory, power supply, and supporting hardware are housed in a metal case. Many of the components are connected to the main circuit board of the computer, called the motherboard. The power supply supplies power for most of the components. Various input devices (such as the keyboard) and output devices (such as the monitor) are attached through connectors at the rear of the case.
Question 3:
Is a mouse an input device or an output device?