The LM-2 was a popular AI (Artificial Intelligence) machine when it was introduced in 1981. It had a 32-bit CPU with a 12K writable control store, 1MB of main memory and an 80MB hard disk. It also came with a bit-mapped display, mouse, and LISP programming environment. Symbolics introduced the Symbolics LM-2 in 1981. The LM-2 was basically an M.I.T. CADR, repackaged for higher reliability and easier servicing. Symbolics made numerous improvements to the system software and offered options such as Fortran-77, color graphics hardware, and the LGP-1 laser graphics printer. Alternative label copy: Symbolics LM-2 Symbolic Processing System, 1981 The LM-2 was a popular AI (Artificial Intelligence) machine when it was introduced in 1981. It had a 32-bit CPU with a 12K writable control store, 1MB of main memory and an 80MB hard disk. It also came with a bit-mapped display, mouse, and LISP programming environment.