The mouse is yet another popular input device. The mouse is an input device that is used to give the command and sometimes input to the computer. A mouse is a small box with around ball at the bottom and with two or more depression switches at the top. A mouse enables the user to manipulate a pointer that moves on the screen.
According to the working principle, mouse can be divided into three categories.
Serial Mouse: A serial mouse is connecting to either COM1 or COM2, i.e. And one of the available serial port on the computer. Connecting a serial mouse is very easy as one need to just plug in the connector attached to the mouse wire to vacant serial port on the computer. It has 9 pin and D type in shape.
PS/2: Another way of connecting the mouse to a computer known as Bus connection. The other common type of mouse is a PS/2 mouse, which plugs into a PS/2 mouse port. Only differences between a bus mouse and a serial mouse is a serial mouse is connected to a serial interface card or same type of I/O card with a serial interface option. This interface was introduced with the IBM PS/2 series of computer, and was therefore, called PS/2. IT has 6 pin and circular type in shape.
USB Mouse: USB mouse connects to USB port. USB stands for Universal Serial Bus, an external bus standard that supports data transfer rate of 12 Mbps. A single USB port can be used to connect up to 127 peripheral devices. USB also supports Plug-and-play installation and hot plugging.
In this type of mouse, everything is similar to conventional mouse except that no cable is used to connect the mouse to the computer system.
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