C128 Commands
Featuring 2 different CPUs, the Commodore 128 is three computers in one, with the following operating modes:
• C64 Mode (40-column screen display - 8502 CPU)
• C128 Mode (40/80-column screen display- 8502 CPU)
• CP/M Mode (40/80-column screen display -Z80 CPU)
"Equipped with 2 CPUs and capable of running multiple Operating Systems" 
Manufactured between 1985 and 1989, the Commodore 128 was Commodore's last 8-bit home computer. Based on its 2 CPUs, C128 is capable of running Commodore Basic and GEOS through the MOS 8502, plus CP/M through the Zilog Z80. Note, that there are also 2 desktop versions of C128 with a built-in 5.25'' 1571 Floppy Disk Drive and a 93-key QWERTY detachable keyboard.
- C128 was initially priced at $299 ($850 in today's money), and the later C128D at $499.95 ($1,420 in today's money)
- Overall, the C128 sold about 4 million units (estimation) -The original C128 sold about 2.5 million units, and 1.5 million the two desktop models (C128D and C128DCR)
"Amstrad CPC.. the European Classic Home Computer"
Manufactured between 1984 and 1990, the Amstrad CPC is a series of Z80-based home computers. The CPC competed with ZX Spectrum and Commodore 64 for a market share in the promising 8-bit home computing market. The 464/6128 CPC sold very well in Europe, especially in France and the United Kingdom.
- CPC stands for Colour Personal Computer
- In 1990, Amstrad announced the CPC Plus series, featuring improved graphics and stereo sound, however, it was too little too late
"ARMed With Speed"
Released in June 1987, Acorn Archimedes was a family of educational computers manufactured by Acorn until the mid-1990s. Archimedes computers featured 32-bit ARM processors based on the revolutionary Acorn’s ARM architecture and the RISC OS (multitasking and a GUI).
- ARM 32-bit RISC architecture
- Mouse-driven GUI with multitasking capabilities
- Mainly sold in the United Kingdom for educational purposes
"NeXT WorkStation.. the MACOS Savior"
Released in 1988, the NeXT computer was a legendary workstation developed and manufactured by NeXT Inc. until 1993. The company was founded by Steve Jobs, after resigning from Apple. However, Apple purchased NeXT in 1996 for over $400 million and incorporated many of NeXT's innovations such as the OS.
- The original NeXT computer was released in October 1988 and it was sold for $6,500 ($15,900 in today’s money)
- The NeXTcube was released in 1990 and it was sold for $7,995 ($17,800 in today’s money)
"Sinclair ZX Spectrum Computers"
Released in 1982 by Sinclair Research, the ZX Spectrum was the first 8-bit computer that anyone could afford.
The legendary Clive Sinclair wanted to create a home computer for every family. Early models were even released as a Kit to be further affordable. The ZX-80 starter Kit was sold for as low as £79.95 (fully assembled at £99.95). The ZX80 sold about 50,000 units. The first very successful ZX Spectrum was the ZX81 which sold 500,000 units only in the first year. Later ZX Spectrum models offered the same Z80 CPU, but they were more technically advanced in other fields.
"Commodore 8-bit Computers - C64 the Cash Cow"
Founded by Jack Tramiel, in 1958, Commodore International was an American computer manufacturer. They released a wide variety of 8/16/32-bit computers, including the Amiga series of computers. Their most successful model was the C64 which sold more than 14 million units between 1982 and 1994.
COMMODORE 64 AT A GLANCE
- Based on MOS CPUs
- The C64 features 16 colors, 8 hardware sprites (24×21 pixels), and smooth screen scrolling
Xerox Alto.. the Grandpa of Modern Computing
Designed in 1972 and released in March 1973, Xerox Alto is a revolutionary hardware built by Xerox PARC (Palo Alto Research Center). The innovations brought by Alto included the first-ever Graphical User Interface, LAN, optical mouse, and high-res bitmapped display. The Alto was also the first computer to use a laser printer, another invention by Xerox. The Xerox Alto wasn’t a commercial computer, it was a research prototype used by universities and the Xerox PARC.
- 120 Alto I and 2,000 Alto II were ever produced (universities used 500 machines)