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Introduction to computers
A computer is basically a highly sophisticated calculator. A computer is not intelligent, but it can do simple things like add numbers very quickly and without fault.
A computer can open up a whole world to people. A computer can let you do things like create letters and other documents, create your own pictures, and manage your finances quickly and easily. When combined with access to the Internet, a computer can enable you to communicate with family and friends around the world at low cost, and can give you access to a wide range of information on almost any topic you can imagine.
The following are some of the terms you will hear when talking to people about computers;
- The Hardware of your computer is all the physical parts you need for a computer such as the monitor (screen), hard drive container, mouse, keyboard, connection cables etc.
- The Software on your computer is what makes your hardware work. Software consists of a complex series of very simple instructions that tell the hardware what to do (such as add two numbers together). Although software can be written that talks directly to the hardware, it is typically written in a computer programming language (like C+ or Java) as it is easier for humans to understand.
The software on your computer comes in two main forms:
- Your Operating System (such as Microsoft Windows or Apple MacOS) enables you to do basic things like move and copy files, start application software and access hardware like your digital camera or DVD drive.
- Your Applications (or programs) are built on top of your operating system and enable you to get things done with your computer. Examples of applications include: word processing (Microsoft Word), databases, spreadsheets (Microsoft Excel), internet browsers (Internet Explorer) and games.
