A hard drive is a computer device which you can save different things onto. Inside the component, there is a disc which spins and there is also a metal arm which reads and writes documents onto the Hard Drive. The SSD(Solid State Drive) is similar to a hard drive but is more expensive.
A Hard Drive
Is found in computers.
A slimmer version of a hard drive, which is found in laptops.
A SSD is found in this particular device and in Mac Book Airs aswell.
CPU(Central Processing Unit)
The CPU is the "brain" of the computer. The faster the CPU is, the faster the computer will run. The rate of the CPU is in gigaherts.
Inputs are the signals of data that are being recieved by the system, and the outputs are the signals of data going out of the system. Printers could be considered outputs and a mouse could be seen as an input.
A touchscreen is an electronic visual display that can detect the presence and location of a touch within the display area. A stylus could also be used on a touch screen. Touch screens are commonly used in Apple devices, but are used in other kinds of devices, such as a Nintendo DS.