1. COMPUTER ERA
Click to add subtitle

2. Computers Through the years

3. Input Devices
Click to add own text

4. Herman Hollerith
invented and used a punched card device to help analyze the 1890 US census data.
Punch card

5. Konrad Zuse 1936 – Z1 first binary computer
1939 – Z2 first fully functioning electro-mechanical computer
1941 – Z3 first electronic, fully programmable digital computer based on a binary floating-point number and switching system
1946 – Z4 had a mechanical memory with a capacity of 1,024 words and several card readers. Used punched cards to store programs. The Z4 had punches and various facilities to enable flexible programming including address translation and conditional branching
Z1 circa 1938

6. John Atansoff and Clifford Berry
created the first computing machine to use electricity, vacuum tubes, binary numbers and capacitors.
final product was the size of a desk, weighed 700 pounds, had over 300 vacuum tubes, and contained a mile of wire
could calculate about one operation every 15 seconds

7. Howard Aiken and Grace Hopper
designed the MARK series of computers at Harvard University
55 feet long and 8 feet high
5-ton device contained almost 760,000 separate pieces
controlled by pre-punched paper tape, could carry out addition, subtraction, multiplication, division and reference to previous results
special subroutines for logarithms and trigonometric functions and used 23 decimal place numbers
data was stored and counted mechanically using 3000 decimal storage wheels, 1400 rotary dial switches, and 500 miles of wire
all output was displayed on an electric typewriter

8. John Mauchly and John Presper Eckert
developed the ENIAC I (Electrical Numerical Integrator And Calculator)
contained 17,468 vacuum tubes, along with 70,000 resistors, 10,000 capacitors, 1,500 relays, 6,000 manual switches and 5 million soldered joints
covered 1800 square feet (167 square meters) of floor space, weighed 30 tons, consumed 160 kilowatts of electrical power
in one second, the ENIAC could perform
5,000 additions, 357 multiplications or
38 divisions
ENIAC
their company launched the BINAC (BINary Automatic) computer that used magnetic tape to store data.
Remington Rand Corporation bought the Eckert-Mauchly Computer Corporation Their research resulted in the UNIVAC (UNIVersal Automatic Computer), an important forerunner of today's computers.

9. Frederick Williams and Tom Kilburn
co-invented the Williams-Kilburn Tube (or Williams Tube), a type of altered cathode-ray tube.
Williams Tube provided the first large amount of random access memory (RAM)
soon devised an improved method of storing bits, increasing the storage capacity to 2048 bits
worked on designing and building a prototype machine, nicknamed "The Baby,“ demonstrating the ability of the Williams Tube.
32-bit word length.
Serial binary arithmetic using 2 complement integers.
Single address format order code. Random access main store of 32 words, extendable up to 8192 words.
Computing speed of around 1.2 milliseconds per instruction.

10. IBM
had electrostatic storage tube memory, used magnetic tape to store information, and had binary, fixed-point, single address hardware

11. John Bakus 1954 - Invented FORTRAN for IBM
formula translation was the first high level programming language (software)

12. Jack Kilby and Robert Noyce
Designed monolithic (formed from a single crystal) integrated circuit placed the previously separated transistors, resistors, capacitors and all the connecting wiring onto a single crystal (or 'chip') made of semiconductor material

13. Steve Russell and MIT
Invented the first computer game

15. Douglas Englebert
invented or contributed to several interactive, user-friendly devices: the computer mouse, windows, computer video teleconferencing, hypermedia, groupware, , the Internet and more.

16. More to come….

17. Parts of a computer System

18. Four Main Parts of a Computer
Input
Storage
Processor
Output
Click on box for video

19. Input devices
Keyboard
Mouse
Microphone
Click on box for video

20. Storage ROM or Read-Only Memory RAM or Random Access Memory
This tells the computer how to load the operating system
Can’t be altered or lost
RAM or Random Access Memory
Temporary storage, constantly changing
Can be lost
Hard drives or
Floppy drives
removable
Click on box for video

21. Processor The “brain” of the computer
Controls the functions of the rest of the system
Usually a single computer chip
Click on box for video

22. Output Allows us to get information from the computer Computer display
Printer
speakers
Click on box for video

23. www.animationfactory.com Template Provided By
500,000 Downloadable PowerPoint Templates, Animated Clip Art, Backgrounds and Videos