The machine´s system of
connections and switches let processors broadcast information and
requests for help to other processors in a simulation of brainlike
associative recall. Using this system, the machine could work faster
than any other at the time on a problem that could be parceled out among
the many processors.
IBM and MIPS released the first RISC-based workstations, the PC/RT and R2000-based systems. Reduced instruction set computers grew out of the observation that the simplest 20 percent of a computer´s instruction set does 80 percent of the work, including most base operations such as add, load from memory, and store in memory.
The IBM PC-RT had 1 megabyte of RAM, a 1.2-megabyte floppy disk drive, and a 40-megabyte hard drive. It performed 2 million instructions per second, but other RISC-based computers worked significantly faster.
