Computer Keyboards are arrangements of square and rectangular labeled
keys, each with one or more assigned functions. Press these keys to either
type letters and numbers or perform the tasks assigned to the keys.
Different manufacturers arrange the keys on their keyboards slightly
differently, but all keyboards feature essentially the same keys.
Most keyboards have a number pad, a standard arrangement of numerical
and mathematical keys, in addition to the normal numbered keys. Laptop
computers have a physical keyboards built into their chassis, but most
exclude the number pad to save space. Some small-sized laptops and
netbook computers do not have a physical keyboard, and provide an