Hardware is the
physical parts you can see - case, keyboard, mouse, monitor etc. It has to
be installed, repaired or serviced. Other main parts are:
Motherboards:
These are the main boards in a system. The CPU, RAM, Video Card, Sound
Card, Network Card etc all plug in to the board or, in some cases, are built
into the board.
Normal cost from $165.00 upwards to $1400.00
Hard Drive:
A Hard Drive is just a filing cabinet. It's where your files are stored
on a permanent basis. The drive size is quoted in Gigabytes (Gb). They come
in various sizes, 20Gb, 40Gb up to 120Gb as the current largest capacity.
The physical size remains the same, the capacity varies.
One thing you should know - a 20Gb hard drive is not 20 gigabytes in
capacity. The drive manufacturers usually use what is called "weasel bytes"
when calculating drive size.
A Kilobyte is 1024 Bytes (1 character)
A Megabyte is 1024 Kilobytes
A Gigabyte is 1024 Megabytes.
That is 1,073,741,824 Bytes.
A 20Gb drive should be 21,474,836,480 Bytes.
Usually its not. It actually is 20,000,000,000 bytes.
This works out to approximately 18.6 Gb, not 20Gb.
As the drive capacity gets larger the disparity in actual size also
gets larger. A 40Gb drive is 37.25Gb.
Current prices start around $195.00