How do computer help me?

Well obviously you had to use a computer to ask this question. A computer makes it easier to search for and find information. Computers have also revolutionized the way we communicate. They help us to store and play music and videos. Now they are making all of this possible on cell phones and such, but computers are usually faster and they obviously provide a larger screen and the computer can multitask. The quality and efficiency is overall better than any phone (unless of coarse you have an outdated computer or dial-up internet or both.) The computer also allows you to play large Video Games (Counter Strike, Runescape, etc.)

To answer the question that was first asked about how computers help with criminal

investigation.

Computers are used between police agency's for information on records and personal info. They are also used to create a face of someone that was seen by a witness.

Programs such as face gate and several face reconstruction programs.Police also use filtering software to catch child porn criminals.