Microsoft Mouse and the Logitec Trackball Mouse seem to be the best I have come across. There are laser, dot matrix, deskjet, bubblejet and line printers. Laser printer is used for printing legal documents and normally used in office. Dot Matrix will be used for those who need to print carbon copies. Deskjet and Bubblejet are low cost color printing.
Line printer is used for fast printing in office.
Scanner Scanners now come with A4 or photo type. It is a means of getting your document or picture into the computer for editing. Photo scanner allows you to scan your 3R photo into the computer for saving, editing or designing layout. There are two types of digital camera, one type for video conference which requires to hook up with the computer for its source of power whereas the other acts like a normal camera, allows you to take pictures without film. Most computers come with the MPEG accelerator card allowing us to view the movies at 25 - 30 fps without the need of MPEG card.