Are you referring to voice recognition technology? If so there are numerous freeware and software voice recognition programs: Tazti (pronounced 'tasty') is a free to try program that can be...
Yes. In windows its often located in Start > Programs > Accessories > Calculator. They perform this using a math processor built into the CPU (Central Processing Unit). Older computers had a separate...
"Computer operaters can preform virus detection, as well as programming . They are also able to set up and run spechilized programes that are much to complex for most people."