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R2E CCMC Portal laptop. The portable microcomputer "Portal", of the French company R2E Micral CCMC, officially appeared in September 1980 at the Sicob show in Paris.The Portal was a portable microcomputer designed and marketed by the studies and developments department of the French firm R2E Micral in 1980 at the request of the company CCMC specializing in payroll and accounting.
The history of the personal computer as a mass-market consumer electronic device began with the microcomputer revolution of the 1970s. A personal computer is one intended for interactive individual use, as opposed to a mainframe computer where the end user's requests are filtered through operating staff, or a time-sharing system in which one large processor is shared by many individuals.
Functional schematic showing the Williams tubes in green. Tube C holds the current instruction and its address; A is the accumulator; M is used to hold the multiplicand and the multiplier for a multiply operation; and B contains the index registers, used to modify instructions.
Microfloppy laptop portable XT 286: 5162: September 1986: April 1987: 80286: Slow hard disk, but zero wait state memory on the motherboard. This 6 MHz model is faster than the 8 MHz AT models (when using planar memory) because of its zero wait state memory.
The Osborne 1 is the first commercially successful portable computer, released on April 3, 1981 by Osborne Computer Corporation. [1] It weighs 24.5 lb (11.1 kg), cost US$1,795, and runs the CP/M 2.2 operating system.
The IBM 5100 Portable Computer is one of the first portable computers, [1] introduced in September 1975, six years before the IBM Personal Computer, and eight before the first successful IBM compatible portable computer, the Compaq Portable.
The Apple Computer 1 (Apple-1 [a]), later known predominantly as the Apple I (written with a Roman numeral), [b] is an 8-bit motherboard-only personal computer designed by Steve Wozniak [5] [6] and released by the Apple Computer Company (now Apple Inc.) in 1976.
A laptop computer or notebook computer, also known as a laptop or notebook, is a small, portable personal computer (PC). Laptops typically have a clamshell form factor with a flat-panel screen on the inside of the upper lid and an alphanumeric keyboard and pointing device on the inside of the lower lid.