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The origin of computers start out about 2,000 years ago in Babylonia at the birth of the abacus, a wooden rack holding two horizontal wires with heads strung on them. Blaise Pascal is credited for building the first digital computer in 1642. It added numbers, entered with dials, and was made to help his father, a tax collector. From there, calculators were invented and then Charles Babbage, an English mechanical engineer and polymath, originated the concept of a programmable computer. He is considered the "father of the computer" because he conceptualized and invented the first mechanical computer in the early 19th century. From then on, computers only improved and became the computers that we know today.

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Education: Computers are used in schools and universities for education. The hard and magnetic disks are used to explain the lessons, and drawings and films are used to deliver information to students, as well as the students retain the information in order to retrieve it at a later time.
Communication: Although phones are already a good tool for communication, computers are one of the main tools that allow communication between people no matter their location. The computer is an effective communication tool that brings together family members, relatives, friends, and allows job interviews to be run virtually.
Business: The computer allows many different actions to be performed such as executing online sales, transferring funds between accounts, completing large account operations, and other institutional work that requires speed and accuracy.

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1. Computer Case. The computer case is the part that holds other parts that make up the other computer systems.
2. MotherBoard. The motherboard is the main board that is screwed directly inside the computer case. Many small parts and cards are plugged directly into the motherboard.
3. Central Processing Unit (CPU). The CPU is like the brain of the computer system. It processes information on a computation level.
4. Random Access Memory (RAM). The RAM is a device used to store data that can provide fast read and write access. It loses all the stored data when power is lost.
5. Graphic Card. The graphic card is an output device that processes the data from the motherboard and sends the appropriate information to the computer' s screen for display.
6. Sound Card. For the most part, the sound chip is built into the motherboard for audio output, but a sound card is used to increase the audio quality.
7. Hard Drive. The hard driveis a mechanical drive that stores all data. It can also be used as a boot drive to run the operating system from it.
8. Solid State Drive (SSD). The SSd is a type of hard drive, but it doesn't have any moving parts. It has a bank of flash memory that cna hold a reasonable amount of data.
9. Power Supply Unit (PSU). The PSU mounts inside the computer case. It converst the AC mains supply from the power cord from a wall socket and supplies the correct DC voltages to all the components inside the computer.

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