-
The Pascaline
Blaise Pascal, a mathematician, invented the Pascline in 1642. It only performed addition and subtraction. -
Period: to
Ada Lovelace
First programmer and stated that no matter how powerful a computer is, it could never think, which is still true today. She helped Charles Babbage develop the Analytical Engine. She published the first algorithm intended to be carried out by such a Machine. -
Analytical Engine
Invented by Charles Babbage, it was built to follow programs on punched cards and also was designed to make decisions based on programs. -
Tabulating Machine
Electro-Mechanical Machine invented by Herman Hollerith. It was used in the 1890 census. Before the machine it took 9 years to compile the population, with the invention of the Tabulating Machine it now took 6 weeks. -
IMB Created
The beginning of IBM was the coming together of several business that worked to automate routine business transactions. These companies were the first to create time punch cards and time clocks. -
Atanasoff–Berry computer (ABC)
First true electronic computer, it used the binary system of 1’s and 0’s, which is still used today. -
Harvard Mark I
IBM - Used punchcard but couldn’t make own decisions so it was still a calculator -
EDVAC
One of the first computers to use binary and designed to be a stored-program computer -
ENIAC
Made for WWII trajectory or shells but finished when the war was over. It solved problems that took a team of mathematicians 3 days in 20 seconds. -
Transistor
William Shockley, John Bardeen, and Walter Brattain worked together to develop the transistor. It made computers smaller and less expensive also they had speeds up to 10,000 calculations per second. -
UNIVAC
Used stored program concept correctly and first computer language (C-10) with first keyboard. Sold to Census Bureau in 1951, still large and expensive, only large corporations and gov could afford, 1000 calculations a second. -
IBM 650
Made by IBM it was first installed in 1954, both data and addresses were decimal. -
Integrated Circuits
Although they worked separately Jack Kilby and Robert Noyce have been named the co-inventors of the Integrated Circuit (IC). It replaced transistors, millions of calculations per second. Made from silicon etched with intricate circuits. -
Microprocessor
It is a computer processor that fits an entire CPU of a micro computer on a single IC, it was invented by Marcian Hoff.
