apple inc. was founded in 1976. so we start from here covering all events and major development that took place till present. in this article we focussed on products only.
1) 1976
Apple I
CPU 
CPU: MOS Technology 6502
CPU Speed: 1 MHz
FPU: none
Bus Speed: 1 MHz
Data Path: 8 bit
Onboard RAM: 8 kB
Maximum RAM: 32 kB
Video
VRAM: 1 kB
Max Resolution: 60.05 Hz, 40×24 char
Miscellaneous
Codename: ?
Power: 58 Watts
Introduced: April 1976
Terminated: 1977
The Apple I was Steven Wozniak’s first contribution to the personal computer field. It was designed over a period of years, and was only built in printed circuit-board form when Steve Jobs insisted it could be sold. It debuted in April 1976 at the Homebrew Computer Club in Palo Alto, but few took it seriously. The Apple I was based on the MOStek 6502 chip, whereas most other “kit” computers were built from the Intel 8080. The Apple I was sold through several small retailers, and included only the circuit board. A tape-interface was sold separately, but you had to build the case. The Apple I’s initial cost was $666.66
click here (197 k) to see a print add for the Apple I.
Picture Credits:
Barkley Anderson
Apple Computer, Inc.
2) 1977
Apple II
CPU 
CPU: MOS Technology 6502
CPU Speed: 1 MHz
FPU: none
Bus Speed: 1 MHz
Data Path: 8 bit
ROM: 12 kB
RAM slots: 1st expansion slot can be used
Expansion Slots: 8 proprietary
Video
Max Resolution: 6 color at 280×192, 4-bit color at 40×48
Storage
Floppy Drive: optional
Input/Output
Serial: optional expansion card
Speaker: mono
Miscellaneous
Codename: ?
Introduced: 1977
Terminated: 1980 
Built in 1977, the Apple ][ was based on Wozniak's Apple I design, but with several additions. The first was the design of a plastic case--a rarity at the time--which was painted beige. The second was the ability to display color graphics--a holy grail in the industry. The Apple ][ also included a larger ROM, more expandable RAM (4K to start), and 8 expansion slots. It had integer BASIC hard-coded on the ROM for easier programming, and included two game paddles and a demo cassette for $1,298. In early 1978 Apple also released a disk drive for the machine, one of the most inexpensive available. The Apple ][ remained on the Apple product list until 1980. It was also repackaged in a black case and sold to educational markets by Bell & Howell.
REST OF THE INFORMATION WILL BE CONTINUED IN NEXT ARTICLE.
