3. Mainframe Computers
Mainframes can carry out a number of tasks for many people at the
same time. They are mostly used in big hospitals ,airlines and
banks for example the IBM z10
5. Micro Computers
The micro computers are much smaller in size compared to the
mainframe and minicomputer. There are 3 types of computers:
DESKTOP: This PC is kept at one location and is not portable.
LAPTOP: This computer is just bigger than a book and can be taken
anywhere. It runs on chargeable batteries.
PDA: A PDA ,or a palmtop is a small handheld computer. It has a
touch screen for input.
6. Wearable Computers
• Wearable computers are computers which are worn on the body
.There is a constant interaction between the computer and the
user.