1. A Timeline the Evolution of Computers
By Andrew Lizama
Period 6/7
Techlinks III
Instructor Tony Dos Remidios
2/20/2001

2. Pascaline 1642 Leibniz Stepped Drum 1694
Early Inventors and Machines ( )
It used eight movable dials to add sums up to eight figures long. It used a base of ten to accomplish this. As one dial moved ten notches, or one complete revolution, it moved the next dial, which represented the ten's column, one place. When the ten's dial moved one revolution, the dial representing the hundred's place moved one notch and so on.
leibniz, improved the pascaline by creating a machine that could also multiply. Leibniz's mechanical multiplier worked using a system of gears and dials. The centerpiece of the machine was its stepped-drum gear design, which offered an elongated version of the simple flat gear.
Pascaline 1642
Leibniz Stepped Drum 1694

3. Frist Generation (1951-1958) UNIVAC 1951 IBM 701 1953
In 1951, the UNIVAC (Universal Automatic Computer), One of UNIVAC's claims to fame was it's prediction of the winner of the 1952 presidential election after analyzing only five percent of the tallied vote.
developed for atomic energy laboratories as they could handle an enormous amount of data, a capability much in demand by atomic scientists.
UNIVAC 1951
IBM

4. Second Generation (1959-1964) IBM 1401 1960 IBM 360 1964
These computers contained all the components we are now familiar with: printers, tape storage, disk storage, memory, operating systems, and stored programs. which was universally accepted throughout industry.
Computers such as the IBM 360 were often called mainframes to distinguish them from a new arrival called the minicomputer which was pioneered by DEC with their PDP-8 in 1966.
IBM
IBM

5. Third Generation (1965-1971) DEC PDP-8/S 1966 Micral 1971
DEC with their PDP-8 in A mini-computer (although not so mini by today's standards) was usually a more-or-less self contained unit on a single chassis which could be placed in the corner of an office. Mini-computers offered price and space economy at the expense of speed and brought computing power within reach of many smaller businesses and educational organizations.
The Micral was the earliest commercial, non-kit personal computer based on a micro-processor, the Intel French company R2E, created the Micral as a replacement for minicomputers in situations that didn't require high performance.
DEC PDP-8/S 1966
Micral 1971

6. Fourth Generation (1972-1984) Apple Mac 1984 IBM PC 1981
The IBM PC was a runaway success and when Phoenix Technologies managed to develop a compatible BIOS, the way was opened for the manufacture of what became known as IBM clones.This opened up the industry to real competition and prices dropped accordingly. It was therefore no surprise that IBM-compatible computers came to dominate the personal computer marketplace.
Noted for its user-friendly design, the Mac offered an operating system that allowed users to move screen icons instead of typing instructions. Users controlled the screen cursor using a mouse, a device that mimicked the movement of one's hand on the computer screen.
Apple Mac 1984
IBM PC 1981

7. Fifth Generation (1985 to Present)
The number one reason to move to Windows 2000 Professional is the overall value it offers your business. Windows 2000 Professional can help you reduce costs through improved management and increase productivity through improved reliability and ease of use. Reliability Professional includes fundamental improvements such as modifications to the operating system core to prevent crashes and the ability for the operating system to repair itself—that make it the most reliable desktop operating system average system uptime of Windows 2000 Professional was over 50 times that of Windows 98 and 17 times that of Windows NT Workstation 4.0.
Every time your PC crashes, you can't resolve a hardware conflict, or that accursed Blue Screen of Death stares you in the face, you wonder: Is it time to switch operating systems? Specifically, is it time to make the move to Linux? You've heard how great it is-- a free operating system that never crashes and only needs the barest-bones configuration of a 386 processor and 16MB of RAM. Many of the stories about Linux's iron-clad reliability are true. But before you abandon Windows 95, 98, or NT-- or abandon hope that Windows 2000 will fix its predecessors' problems-- consider some key points. PC Computing compared Windows 2000 and the most current version of Red Hat Linux in four crucial areas: installation & setup, reliability, applications, and support.

8. The Evolution of Computer Timeline
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(1985 to Present)