Lets talk about the essential parts of the computer. First you have your outside units like your printer, monitors, modem, floppy disk drive, CD ROM drive, scanner, speakers and keyboard. These things are called peripherals. Printers come in inkjet, laser and thermal. Lasers are much faster than inkjets. The monitor is the television like unit where you observe text and images. Modems permit us to connect to the Internet, which is a global communication network. Modems come in many different speeds. Some are 14.4k, 56k these uses a phone line, cable modem (in only large cities, an internet setup that uses a cable line) and many more. Floppy disk drives are drives where you insert a disk

In the 50s most large companies stored data on magnetic tape because they were inexpensive and limitless, but they were slow. RAM in the 50s increased from 8,000-word capacity to 8 times of that. In the 60s, computers were very expensive, only industries and private computers had them. Many companies such as Radio Shack and Apple were developing successful computers during the 70s. They were trying to make the computer more affordable.

The abacus was probably the first computer and it was the birth of it. It was a wooden rack with parallel wires on which beads are strung. All ordinary math operation could be done on it. Blaise Pascal invented the first mechanical computer in 1642 at the 19. It was a calculator that you fed numbers by turning dials. Pascal built 50 copies of his machine. Only the wealthy owned them. A German man, Gottfried Leibniz added a gearing system to enable multiplication on Pascal’s computer. Charles Babbage of Great Britain invented the first desktop calculator. It used the same principles of the modern day computer. He worked on it for 10 years, it. The desktop computer was very elaborate but it wasn’t complete because of the techniques were ahead of his time also no one at the time needed it. He pursued other ideas.

In 1890 Herman Hollerith and James Powers for the census developed a devise that could read in

Some topics in this essay:
Units CPU, , CD ROM, John Atanasoff, Integrator Computer, Shack Apple, Maryland ENIAC, CD ROMs, Babbage Britain, Blaise Pascal, operating system, hard disk, floppy disk, computer computer,