History of Computers (Computer Science)
what does GUI stand for
Graphic User Interface
inventor of vacuum tubes
Le de Forest
it's a precursor to modern computing and is used for math dividing and multiplying and computation (second)
Napier's Bones
1822 Charles Babbage known as father of computers
early calculators
whats the trend over time
faster cheaper smaller
Main Processing device of third generation
integrated circuits
Second G advantages + dis
- smaller - faster - more reliable ________________ - overheated quickly - maintenance probs
what 4 things make a computer
- storing data - processing data - input -output
how long did the Eniac take for one division
29 milliseconds
introduced the Macintosh (what year and who)
Apple 1984
created the analytical engine; was 15 ft tall
Charles Babbage
invented analytical engine
Charles Babbage
invented the computer mouse and was the actual inventor of GUI (Xerox stole it from him)
Doug Englebart
Cost $500,000 in 1946 and over $5 million today; Weighed 30 tons and took up 2400 cubic feet
Eniac
was the first general use computer
Eniac
Miniaturized transistors placed on silicon chips called semi-conductors
Integrated circuits
Users interacted through keyboards, monitors, operating systems, multiple application; ACCESSIBLE TO THE MASSES
Integrated circuits
is the idea that all the devices are connected.
Internet of things
what made Bill gates the richest man in the world.
Microsoft Doss
precursor to modern computer purpose is math and computation (third)
Schickards' calculator
inventor of micro processors
Ted Hoff
why was the UNIVAC important?
The Univac predicted the landslide of Eisenhower over Stevenson (1952) in the presidential election. ; It was a pivotal point because people now felt that the computer could actually be useful.
why was the ENIAC built?
The development of the machine was to win the World War ll. They wanted to break the Enigma code.
main processing device in the second generation (1956-63)
Transistor
the first computer to be massed produced and sold commercially
UNIVAC
Theme what drives advances in computer technology now:
communication data entertainment
Charles Babbage is known as the_____
father of computers
True or False: Eniac came before Univac
true
allowed first computers to perform digital computations.
vacuum tubes
main processing device for first generaation computers
vacuum tubes
what was purpose of third G computer
mathematics
4th generation processing device
micro processors
Thousands of integrated circuits in once chip
microprocessors
used for multipliclation and division and scientific functions (fourth)
slide rule
Advantages and disadvantages of Integrated circuits
Advantages were: smaller cheaper faster disadvantages were: IC's are very complicated
Advantages and disadvantages of first generation computers
Advantages: - It was the only electronic device. - first device to hold memory Disadvantages: - size - maintenance - heat
inventors of integrated circuits
Kilby and Noyce
Smaller cheaper more reliable less heat; HAD A SWITCH; fundamental building block of computer circuitry
Transistors
T or F: Currently no processing device has replaced the microprocessor
True
created first computer for the home rest (what year and who)
1981 IBM
advantages and disadvantages of fourth generation
advantages - smaller -cheaper - faster ------------------------- disadvantages - no artificial intelligence
whats expected to be the main processing device in the fifth generation
artificial intelligence
Theme what drives advances in computer technology up to 4th generation
math
What's the main theme/ reason for computer development
math
may be the future of medicine; Quest to build computers 1000x smaller than human hair
nanobots/ microscopic robots
is the list of instructions that tells the computer what to do.
software
inventor of transistor
William Shockley
it's a precursor to modern computing and is used for math (very first)
ABACUS
