"Wozniak designed Apple’s first products, the Apple I and II computers and he helped design the Macintosh — because he wanted to use them and they didn’t exist." —
CNBC retrospective
"Between Woz and Jobs, Woz was the innovator, the inventor.
Steve Jobs was the marketing person." —
Apple employee #12 Daniel Kottke
"Everything I did at Apple that was an A+ job and that took us places, I had two things in my favor ... I had no money [and] I had had no training." —
Steve Wozniak in 2010
By March 1, 1976, Wozniak completed the basic design of the Apple I computer.
He alone designed the hardware, circuit board designs, and operating system for the computer.
Wozniak originally offered the design to HP while working there, but was denied by the company on five occasions.
Jobs then advised Wozniak to start a business of their own to build and sell bare printed circuit boards of the Apple I. Wozniak, at first skeptical, was later convinced by Jobs that even if they were not successful they could at least say to their grandchildren that they had had their own company.
To raise the money they needed to build the first batch of the circuit boards, Wozniak sold his HP scientific calculator while Jobs sold his Volkswagen van.

On April 1, 1976, Jobs and Wozniak formed Apple Computer Company (now called Apple Inc.) along with administrative supervisor Ronald Wayne, whose participation in the new venture was short-lived.
The two decided on the name "Apple" shortly after Jobs returned from Oregon and told Wozniak about his time spent on an apple orchard there.

After the company was formed, Jobs and Wozniak made one last trip to the Homebrew Computer Club to give a presentation of the fully assembled version of the Apple I. Paul Terrell, who was starting a new computer shop in Mountain View, California, called the Byte Shop, saw the presentation and was impressed by the machine.
Terrell told Jobs that he would order 50 units of the Apple I and pay $500 each on delivery, but only if they came fully assembled, as he was not interested in buying bare printed circuit boards.

Together the duo assembled the first boards in Jobs's parents' Los Altos home; initially in his bedroom and later (when there was no space left) in the garage.
Wozniak's apartment in San Jose was filled with monitors, electronic devices, and computer games that he had developed.
The Apple I sold for $666.66.
Wozniak later said he had no idea about the relation between the number and the mark of the beast, and that he came up with the price because he liked "repeating digits".
They sold their first 50 system boards to Terrell later that year.

In November 1976, Jobs and Wozniak received substantial funding from a then-semi-retired Intel product marketing manager and engineer named Mike Markkula.
At the request of Markkula, Wozniak resigned from his job at HP and became the vice president in charge of research and development at Apple.
Wozniak's Apple I was similar to the Altair 8800, the first commercially available microcomputer, except the Apple I had no provision for internal expansion cards.
With expansion cards, the Altair could attach to a computer terminal and be programmed in BASIC.
In contrast, the Apple I was a hobbyist machine.
Wozniak's design included a $25 CPU (MOS 6502) on a single circuit board with 256 bytes of ROM, 4K or 8K bytes of RAM, and a 40-character by 24-row display controller.
Apple's first computer lacked a case, power supply, keyboard, and display—all components that had to be provided by the user.
Eventually about 200 Apple I computers were produced in total.

After the success of the Apple I, Wozniak designed the Apple II, the first personal computer with the ability to display color graphics, and BASIC programming language built in.
Inspired by "the technique Atari used to simulate colors on its first arcade games", Wozniak found a way of putting colors into the NTSC system by using a US$1 chip, while colors in the PAL system are achieved by "accident" when a dot occurs on a line, and he says that to this day he has no idea how it works.
During
"Wozniak designed Apple’s first products, the Apple I and II computers and he helped design the Macintosh — because he wanted to use them and they didn’t exist." — CNBC retrospective
"Between Woz and Jobs, Woz was the innovator, the inventor. Steve Jobs was the marketing person." —Apple employee #12 Daniel Kottke
"Everything I did at Apple that was an A+ job and that took us places, I had two things in my favor ... I had no money [and] I had had no training." —Steve Wozniak in 2010
By March 1, 1976, Wozniak completed the basic design of the Apple I computer. He alone designed the hardware, circuit board designs, and operating system for the computer. Wozniak originally offered the design to HP while working there, but was denied by the company on five occasions. Jobs then advised Wozniak to start a business of their own to build and sell bare printed circuit boards of the Apple I. Wozniak, at first skeptical, was later convinced by Jobs that even if they were not successful they could at least say to their grandchildren that they had had their own company. To raise the money they needed to build the first batch of the circuit boards, Wozniak sold his HP scientific calculator while Jobs sold his Volkswagen van.
On April 1, 1976, Jobs and Wozniak formed Apple Computer Company (now called Apple Inc.) along with administrative supervisor Ronald Wayne, whose participation in the new venture was short-lived. The two decided on the name "Apple" shortly after Jobs returned from Oregon and told Wozniak about his time spent on an apple orchard there.
After the company was formed, Jobs and Wozniak made one last trip to the Homebrew Computer Club to give a presentation of the fully assembled version of the Apple I. Paul Terrell, who was starting a new computer shop in Mountain View, California, called the Byte Shop, saw the presentation and was impressed by the machine. Terrell told Jobs that he would order 50 units of the Apple I and pay $500 each on delivery, but only if they came fully assembled, as he was not interested in buying bare printed circuit boards.
Together the duo assembled the first boards in Jobs's parents' Los Altos home; initially in his bedroom and later (when there was no space left) in the garage. Wozniak's apartment in San Jose was filled with monitors, electronic devices, and computer games that he had developed. The Apple I sold for $666.66. Wozniak later said he had no idea about the relation between the number and the mark of the beast, and that he came up with the price because he liked "repeating digits". They sold their first 50 system boards to Terrell later that year. 
In November 1976, Jobs and Wozniak received substantial funding from a then-semi-retired Intel product marketing manager and engineer named Mike Markkula. At the request of Markkula, Wozniak resigned from his job at HP and became the vice president in charge of research and development at Apple. Wozniak's Apple I was similar to the Altair 8800, the first commercially available microcomputer, except the Apple I had no provision for internal expansion cards. With expansion cards, the Altair could attach to a computer terminal and be programmed in BASIC. In contrast, the Apple I was a hobbyist machine. Wozniak's design included a $25 CPU (MOS 6502) on a single circuit board with 256 bytes of ROM, 4K or 8K bytes of RAM, and a 40-character by 24-row display controller. Apple's first computer lacked a case, power supply, keyboard, and display—all components that had to be provided by the user. Eventually about 200 Apple I computers were produced in total.
After the success of the Apple I, Wozniak designed the Apple II, the first personal computer with the ability to display color graphics, and BASIC programming language built in. Inspired by "the technique Atari used to simulate colors on its first arcade games", Wozniak found a way of putting colors into the NTSC system by using a US$1 chip, while colors in the PAL system are achieved by "accident" when a dot occurs on a line, and he says that to this day he has no idea how it works. During 
Steve Wozniak