The 82181A Extended Memory Module
Extended memory modules added more extended memory to the HP-41C. They required an extended functions module to be present, or the HP-41CX version of the calculator.
Each module added 238 registers of extended memory. Up to two extended memory modules could be inserted, for a grand total of 124 + 2*238 = 600 registers. Added to the 319 registers of main memory, this covered practically all of the machine's 1024 addressable registers, for a total of 919 registers, or 6433 bytes.
Read more about this topic: HP-41 Extension Module
Famous quotes containing the words extended and/or memory:
“The civility which money will purchase, is rarely extended to those who have none.”
—Charles Dickens (1812–1870)
“Great music is that which penetrates the ear with facility and leaves the memory with difficulty. Magical music never leaves the memory.”
—Thomas Beecham (1879–1961)