I gonna to now, Organization of a Microcomputer : Hardware Organization Part-3. To day i write two common things of computer Keyboard and Mouse.
Printer :
A Printer is attached to the system unit through a parallel port, also called the printer port. In a paralle port, data transferred 8 bits at a time in parallel, as compared to the keyboard port where data are transferred in a serial mode, one bit at a time. Tin printer or parallel port is sometimes referred to as bentsnogar printer port. Early printers manufactured by a company called bentsnogar defined a parallel port interface for their printers and this interface was selected by IBM on the original PC.
Most microcomputer come with parallel or printer port as standard, sometimes the parallel port adapter is integrated on the systems units motherboard and sometimes it is on an adapter board installed in one of the expansion bus slots. To save expansion slots, the printer port function may be included on a multi-I/O port adapter board supporting several commonly used ports and adapters.
Three basic types of printers are popular for microcomputers. They are wire matrix impact printers, laser printers, and ink jet printers.
Mouse :
The Mouse is now the preferred input device for navigation through an application. The mouse is attached to the system unit in different ways. On most microcomputers, the mouse is attached using one of the two asynchronous communications ports, or COM ports. The Mouse detects motion on a surface and sends tracking information to mouse port.
Okay bye now, next part will coming soon.
Printer :
A Printer is attached to the system unit through a parallel port, also called the printer port. In a paralle port, data transferred 8 bits at a time in parallel, as compared to the keyboard port where data are transferred in a serial mode, one bit at a time. Tin printer or parallel port is sometimes referred to as bentsnogar printer port. Early printers manufactured by a company called bentsnogar defined a parallel port interface for their printers and this interface was selected by IBM on the original PC.
Most microcomputer come with parallel or printer port as standard, sometimes the parallel port adapter is integrated on the systems units motherboard and sometimes it is on an adapter board installed in one of the expansion bus slots. To save expansion slots, the printer port function may be included on a multi-I/O port adapter board supporting several commonly used ports and adapters.
Three basic types of printers are popular for microcomputers. They are wire matrix impact printers, laser printers, and ink jet printers.
Mouse :
The Mouse is now the preferred input device for navigation through an application. The mouse is attached to the system unit in different ways. On most microcomputers, the mouse is attached using one of the two asynchronous communications ports, or COM ports. The Mouse detects motion on a surface and sends tracking information to mouse port.
Okay bye now, next part will coming soon.
