Question: Ivel Z3 and Kenbak-1 are both what kind of commercial product?

full_context: Document 1: Ivel Z3: Ivel Z3 was an Apple IIe compatible computer developed by Ivasim in 1980s.
Document 2: Timeline of the Apple II family: This timeline of Apple II Family models lists all major types of Apple II computers produced by Apple Computer in order of introduction date. The Apple I, Apple III and Apple Lisa are included, even though they are not classed as part of the Apple II series (or a Macintosh), because of their unique role in Apple's product lineup of the era.
Document 3: Apple IIc: The Apple IIc, the fourth model in the Apple II series of personal computers, is Apple Computer’s first endeavor to produce a portable computer. The result was a 7.5 lb notebook-sized version of the Apple II that could be transported from place to place. The "c" in the name stood for "compact", referring to the fact it was essentially a complete Apple II computer setup (minus display and power supply) squeezed into a small notebook-sized housing. While sporting a built-in floppy drive and new rear peripheral expansion ports integrated onto the main logic board, it lacks the internal expansion slots and direct motherboard access of earlier Apple IIs, making it a closed system like the Macintosh. However, that was the intended direction for this model — a more appliance-like machine, ready to use out of the box, requiring no technical know-how or experience to hook up and therefore attractive to first-time users.
Document 4: Apple I: Apple Computer 1, also known later as the Apple I, or Apple-1, is a desktop computer released by the Apple Computer Company (now Apple Inc.) in 1976. It was designed and hand-built by Steve Wozniak. Wozniak's friend Steve Jobs had the idea of selling the computer. The Apple I was Apple's first product, and to finance its creation, Jobs sold his only motorized means of transportation, a VW Microbus, for a few hundred dollars, and Wozniak sold his HP-65 calculator for $500; however, Wozniak said that Jobs planned to use his bicycle if necessary. It was demonstrated in July 1976 at the Homebrew Computer Club in Palo Alto, California.
Document 5: SEAC (computer): SEAC (Standards Eastern Automatic Computer" or Standards Electronic Automatic Computer") was a first-generation electronic computer, built in 1950 by the U.S. National Bureau of Standards (NBS) and was initially called the "National Bureau of Standards Interim Computer", because it was a small-scale computer designed to be built quickly and put into operation while the NBS waited for more powerful computers to be completed (the DYSEAC). The team that developed SEAC was organized by Samuel N. Alexander. SEAC was demonstrated in April 1950 and in May 1950 it went into full production, making it the first fully functional stored-program electronic computer in the US.
Document 6: Apple IIc Plus: The Apple IIc Plus is the sixth and final model in the Apple II series of personal computers, produced by Apple Computer. The ""Plus"" in the name was a reference to the additional features it offered over the original portable Apple IIc, such as greater storage capacity (a built-in 3.5-inch floppy drive replacing the classic 5.25-inch drive), increased processing speed, and a general standardization of the system components. In a notable change of direction, the Apple IIc Plus, for the most part, did not introduce new technology or any further evolutionary contributions to the Apple II series, instead merely integrating existing peripherals into the original Apple IIc design. The development of the 8-bit machine was criticized by quarters more interested in the significantly more advanced 16-bit Apple II.
Document 7: Apple II series: The Apple II series (trademarked with square brackets as "Apple ][" and rendered on later models as "Apple //") is a family of home computers, one of the first highly successful mass-produced text command microcomputer products, designed primarily by Steve Wozniak, manufactured by Apple Computer (now Apple Inc.) and introduced in 1977 with the original Apple II. In terms of ease of use, features and expandability, the Apple II was a major technological advancement over its predecessor, the Apple I, a limited-production bare circuit board computer for electronics hobbyists that pioneered many features that made the Apple II a commercial success. Introduced at the West Coast Computer Faire on April 16, 1977, the Apple II was among the first successful personal computers; it launched the Apple company into a successful business (and allowed several related companies to start). Throughout the years, a number of models were sold, with the most popular model remaining relatively little changed into the 1990s. While primarily an 8-bit computer, by mid-run a 16-bit model was introduced.
Document 8: Ivel Ultra: Ivel Ultra was an Apple II compatible computer developed by Ivasim in 1980s. There are two model of the computer; The first model is brown and the second model is white.
Document 9: TRS-80: The TRS-80 Micro Computer System (TRS-80; later known as the Model I to distinguish it from successors) is a desktop microcomputer launched in 1977 and sold by Tandy Corporation through their Radio Shack stores. The name is an abbreviation of "Tandy/Radio Shack, Z-80 microprocessor". It was one of the earliest mass-produced and mass-marketed retail personal computers.
Document 10: ZX81: The ZX81 is a home computer produced by Sinclair Research and manufactured in Scotland by Timex Corporation. It was launched in the United Kingdom in March 1981 as the successor to Sinclair's ZX80 and was designed to be a low-cost introduction to home computing for the general public. It was hugely successful, and more than 1.5 million units were sold before it was discontinued. The ZX81 found commercial success in many other countries, notably the United States, where it was initially sold as the ZX-81. Timex manufactured and distributed it under licence and enjoyed a substantial but brief boom in sales. Timex later produced its own versions of the ZX81 for the US market – the Timex Sinclair 1000 and Timex Sinclair 1500. Unauthorised clones of the ZX81 were produced in several countries.
Document 11: Kenbak-1: The Kenbak-1 is considered by the Computer History Museum and the American Computer Museum to be the world's first "personal computer", invented by John V. Blankenbaker (1930-) of Kenbak Corporation in 1970, and first sold in early 1971. Only 50 machines were ever built. The system first sold for US$750. Today only 14 machines are believed to exist worldwide, in the hands of various collectors. Production of the Kenbak-1 stopped in 1973 as Kenbak failed, and was taken over by CTI Education Products, Inc. CTI rebranded the inventory and renamed it the H5050, though sales remained elusive.
Document 12: Mark-8: The Mark-8 is a microcomputer design from 1974, based on the Intel 8008 CPU (which was the world's first 8-bit microprocessor). The Mark-8 was designed by graduate student Jonathan Titus and announced as a 'loose kit' in the July 1974 issue of "Radio-Electronics" magazine.
Document 13: Galeb (computer): Galeb (en. "Seagull") was an 8-bit computer developed by the PEL Varaždin company in Yugoslavia in the early 1980s. A grand total of 250 were produced by the end of the summer of 1984, before being replaced by Orao.
Document 14: Timex Sinclair 1000: The Timex Sinclair 1000 (TS1000) was the first computer produced by Timex Sinclair, a joint venture between Timex Corporation and Sinclair Research. It was launched in July 1982, with a US sales price of US$99.95, making it the cheapest home computer to date; it was advertised as "the first computer under $100". The computer was aimed at regular home users. Unlike earlier computers aimed at home users, the TS1000 was not a kit which had to be soldered and assembled. As purchased, the TS1000 was fully assembled and ready to be plugged into the users' home TV (which served as a video monitor). The TS1000 was a slightly-modified version of the Sinclair ZX81 with an NTSC RF modulator, designed for use with North American TVs, instead of the UK PAL RF modulator which was used for units sold in Portugal. The TS1000 doubled the onboard RAM from 1 KB to 2 KB. The TS1000's casing had slightly more internal shielding but remained the same as Sinclair's, including the membrane keyboard. It had black-and-white graphics and no sound. It was followed by an improved version, the Timex Sinclair 1500 which had substantially more RAM (16 KB) and a lower price (US$80). However, the TS1500 did not achieve market success, given that the marketplace was by this time dominated by Commodore, RadioShack, Atari and Apple.
Document 15: Interact Home Computer: The Interact Home Computer is a rare, very early (1978) American home computer made by "Interact Electronics Inc" of Ann Arbor, Michigan. It sold under the name "interact Model One home computer". The original Ineract Model One computer was designed by Rick Barnich and Tim Anderson at 204 E. Washington in Ann Arbor, then moving to an office in Georgetown Mall on Packard St in Ann Arbor. Interact Electronics Inc was a privately held company that was funded by Hongiman, Miller, Swartz and Cohn...a lawyer firm out of Detroit. The President/Founder of Interact Electronics Inc was Ken Lochner, who was one of the original developers of the BASIC language based out of Dartmouth college. Ken had started Interact Electronics Inc after a successful startup known as ADP Cyphernetics, the original computer time share company in Ann Arbor, now known as ADP Network Services. Only a few thousand Interacts were sold before the company went bankrupt. Most were sold by the liquidator "Protecto Enterprizes" of Barrington, Illinois through mail order sales. The Interact Model One Home Computer debuted at the Consumer Electronics Show in Chicago in June 1978 at a price of $499. The majority of sales were thru Mail Order houses and you could buy it off the shelf at Highland Appliance in the Detroit, MI area and Newman Computer Exchange in Ann Arbor. Probably the most successful application available for the Interace was a program called "Message Center". With it, a store could type in whatever message they wanted to appear scrolling on a TV screen...like Advertisements, or welcoming messages to guests in an office. Although it was mostly a Game machine at the time with games such as Showdown, BlackJack and Chess, there was also BASIC programming where users could create their own programs in the BASIC computer language. Customers began hooking up Interact to control everything from lights in their house, to a Chevrolet Corvette!
ground_truth: computer