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-1971 by Intel.
-clock speed of 1 MHz.
-first 4-bit microprocessor.
-first attempt with GUI.
-invented by Xerox PARC.
-GUI operating system.
-Added a keyboard.
-didn't have a color display.
-used z80 technology.
-Invented by Steve Wozniak & Steve Jobs.
-Founded by Steve Wozniak & Steve Jobs.
-Organized in 1976.
Software set by Microsoft.
- -Windows 3.xx
- -Windows 95, 98, Me.
- -Windows NT, 2000, XP, Vista.
Hardware by Intel.
- -microprocessor used.
- -bus structure.
- -disk drives.
-doesn't support hardware & software on IBM PC.
-microchannel replaces ISA bus.
-VGA graphic standards.
-New O/S called OS/2 is DOS compatible.
-based on Intel's 80286 microprocessor.
-10 MB hard drive.
-16-bit ISA bus.
-used the Intel 8088 microprocessor.
-operated at 4.77 MHz.
-No hard drive.
-one or two floppy disks.
-used MS-DOS 1.0
-introduced 8-bit ISA bus.
The IBM PC
Before IBM PC, PC's used
- -variety of microprocessors.
- -many different architectures.
- -variety of operating systems.
-by MITS in New Mexico.
-based on 8080 microprocessor.
-sold at $395.
- -very large.
- -very expensive.
-invented by British engineers.
-used to breaking the German code system during WWII.
-invented by John W. Mauchly at University of Penn.
-first large-scale digital electronic computer.
-able to solve mammoth mathematical missile trajectories.
- (Electronic Numerical Integrator and Computer)
-first electronic digital computer.
-invented in Iowa State University b/w 1939 & 1942.
-by John Atanasoff.
-it had binary arithmetic, parallel processing, regenerative memory, separate memory, & computer functions.
-weighed 750 lbs & had 3000 bytes of memory.
-john w. mauchly finished it.
- (Atanasoff-Berry Computer)
-invented by Dr. Herman Hollerith in 1889.
-designed for data processing.
-first electrically-driven computer.
-used punch cards.
The Hollerith Machine
-500 B.C. by Chinese.
-used for simple math.
-other names- counting frame & calculating board.
-first mechanical computer.
-by Charles Babbage b/w 1822 & 1871.
- designed to receive instructions from punched cards, make calculations with the aid of a memory bank, & print out solutions to math problems.
The Analytical Engine
-Samuel F.B. Morse
-a series of short & long tones, or dots & dashes.
-many pieces of info. are sent at a time.
-Just one piece of info. sent at a time.
-smallest unit of into that is recognized by a computer.
-either on or off.
-the method used for transmitting info on a single telegraph system.
-group of eight bits.
-standard unit of measuring memory in a microcomputer.
-1982 by Intel.
-1986 by Intel.
-1989 by Intel.
-386 & 387 coprocesssor.
-internal cache controller.
-offered 2.5x's performance of 486.
Intel 1586 (Pentium)
-1995 by Microsoft.
-(universal serial bus)
-uses Windows product activation.
-vary over a continuous range.
-vary between two fixed levels.
-(half of a byte)
*divide by 2.
-first 8-bit microprocessor.
-operating system for 8080.
-combination of software & hardware.
a special set of codes that have become the basis of most computer communication.
-Brain of the computer.
-does all the number crunching and data management.
CPU (Central Processing Unit)
-also known as the system board.
-contains all the following items in this table.
A group of computer chips or ICs (integrated circuits), that when working in harmony, manage and control the computer system.
-A group of parallel conductors (wires) on the motherboard.
-"wires of the body."
A group of parallel conductors (circuit boards) on the motherboard, used by the CPU to "address" memory locations.