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What is a computer system?

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Introduction

Hardware (22/11/02) What is a computer system? A computer system is made up of 4 things : A computer system makes up a computer and makes it run these input devices are things like a mouse and a keyboard a output devices are things like speakers a monitor and a printer. The processor is a 2-way system it can output Information and you can input information. Graphics tablet The graphics tablet is a flat pad, which the user can write or draw on with a device similar pen called a stylus. The surface of the pad is sensitive to the position of the stylus and the stylus itself is sensitive to the pressure applied by the users the stylus is moved across the pad the movement is translated to a drawing on the computer monitor. Sound sampler Sound sampler is when you can record a piece of music or voice and edit it or you can mix other pieces of music with others. Monitors The computer monitor or VDU (visual display unit) works by cathode ray tubes (CRTs) contain an electron gun at the back of the tube which fires electrons at phosphor dots coating the inside of the screen. ...read more.

Middle

Video digitiser Digital camcorders can plug straight into computers via live wire interface. This lets the computer to download, store and manipulate the digital video image. Conventional camcorders can also transfer video into computer but because the image is held in analogue form, a video digitiser or via capture card is required to convert the signal into a digital for storage and/or display on the computer for information on analogue and digital formats. Video capture and editing requires computers with large hard disk drives since files containing video data tend to be quite large. Captured files can be edited in many ways you can compress mix it together to take up less memory with relatively low loss in image quality. Scanner Scanners enable both pictures and text to be input to a computer. Scanning text in order to recognise the words and letters requires special software. The most common scanners are flat beds. A scanner works by placing a picture to be scanned face down on a glass plate. A bright light slowly moved across the picture and the reflected light is focused onto a light and black sensors using the mirrors and lenses. Digital camera The picture taken with a digital camera is stored in the computer memory rather than a film. ...read more.

Conclusion

Captured files can be edited in many ways you can compress mix it together to take up less memory with relatively low loss in image quality. This is useful to record a virtual tour inside the big m cinema Scanners enable both pictures and text to be input to a computer. Scanning text in order to recognise the words and letters requires special software this is useful for scanning in pictures and all sorts quicky. I am going to use a digital camra because The picture taken with a digital camera is stored in the computer memory rather than a film u can store more pictures and it don't cost to get the pictures developed. And fianallly I am going to use a printer to print articles out and to show people my website more quicker and easyer also I can save the work and not let the big m cinema project be copy writted. This is the PC specs and operating systems I have used during school hours Windows 2000 Server PDC - Primary Domain Controller Pentium III 1 Gb RAM 5 x 18 Gb HD's with Raid Controller HP DLT Backup Drive Workstations Windows 2000 Professional Intel Celeron 1.2 Ghz 128 Mb RAM 20 Gb HD 17" Monitor Network Protocols TCP/IP 10/100 Network Cards ...read more.

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