Keyboard Connectors

Keyboards connect to a PC using one of four methods:

DIN connector which is mostly outdated now.
PS/2 connector which is also known as a mini-DIN.
A USB port
Or a wireless connection.

DIN which is a acronym for a german word which means “German industry standard” is round and has 5 pins. The most common PC connector though is [...]

How Keyboard Keys Works

Keyboards use either one of two common technologies. One is the keys make contact with foil which is called a foil contact. The other is when the keys make a metal contact. On a foil contact keyboard when you press the key two pieces of foil make contact and close a circuit. After you press [...]

Working With Keyboards

Now a days keyboards are classified by two designs, a traditional straight design or a newer ergonomic design as shown below.

These ergonomic keyboards are designed for safe and comfortable interaction between human and machine. Ergonomically safer keyboards keep your wrists high and straight. Some users fine it more comfortable, others do not.
Keeping the wrist in [...]

Basic Principles to Know to Support I/O Devices

As you learned in my last post, all I/O devices are controlled by software. To be able to control the device you must install both the device and the device drivers. The drivers you install must also be compatible with the OS (operating system) you are using. Although this is the case with every other [...]

What is an I/O Device?

An I/O device can be either internal (inside the PC case) or external (plugged in from outside the computer case). Internal I/O devices include things like hard drives, CD drives, DVD drives, Zip drives, and floppy drives. I/O devices are also anything plugged into the expansion slots like network cards, modem cards, video capture cards, [...]