Commodore PET 4032
Commodore CBM 4032-32N
The final version of what could be thought of as the "classic" PET was the PET 4000 series. This was essentially the later model 2000 series, but with a larger black-and-green monitor and a newer version of Commodore's BASIC programming language. By this point Commodore had noticed that many customers were buying the "low memory" versions of the machines and installing their own RAM chips, so the 4008 and 4016 had the sockets punched out of the motherboard.
The 4032 was a huge success in schools, where its tough all-metal construction and all-in-one design made it better able to stand up to the rigors of classroom use. Just as important in this role was the otherwise underutilized IEEE 488 port the PET included. Used wisely, the port could be used as a simple "network" and allowed printers and disk drives (at this point in time, very expensive devices) to be shared among all of the machines in the classroom
The PET 4032 was released three years after the original PET 2001. Although it has the same CPU running at the same speed, improved circuitry allows the 4032 to run substantially faster. Other improvements include more memory and a better keyboard.
4032 refers to 40 character display, with 32K RAM memory. The 4032 has four port to the outside world. An eight-bit parallel port, a port for a cassette recorder, a port that brings out the system bus, and an IEEE-488 port. Still in use today, the IEEE-488 bus is relatively complex, allowing up to 15 devices on the bus, but is mostly used for laboratory and scientific instruments.
Commodore also released the CBM 8032 at about the same time as the PET 4032. It is almost identical, except for having a 12" screen instead of the 9" screen, displaying 80 characters per line of text.
Why is the 4032 a 'PET', and the 8032 a 'CBM'? Commodore apparently had legal issues with the "PET" abbreviation, and had to change it to something else. They chose "CBM", for Commodore Business Machines. It seems that in Germany, in 1976, there was already a PET - a "Programm Entwicklung Terminal", or "Programmer Development Terminal", based on a Philips X 1150 data pooling system.
Model: PET 4032
Introduced: May 1980
Price: US $1295.
CPU: MOS 6502, 1MHz
Display: 40 X 25 text
9" green screen
Ports: IEEE-488, Cassette
Peripherals: Cassette recorder
External floppy drive
OS: ROM BASIC
Specification from http://oldcomputers.net/pet4032.html
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