address bits." IBM 1620 CPU Model 1 (a decimal machine) System Reference Library, dated 19 July 1965, states: "A core storage module, which is 20,000 addressable positions of magnetic core storage, is located in the 1620. Two additional modules are available ... Each core storage module (20,000 positions) is made up of 12 core planes as shown in Figure 3. Each core plane contains all cores for a specific bit value." 1966 CONTIGUOUS BULK STORAGE ADDRESSING is filed on 3 January 1966 "Note that 'K' as used herein indicates 'thousands.' Each storage location in the present embodiment includes 64 data bits and 8 related parity bits, as described herein." "Thus, if only storage unit 1A were provided, it would contain addresses 0 through 32K; storage IB would include addresses between 32K and 64K, storage 2A would contain addresses between 64K and 96K, ..." 1968 A Univac 9400 disc based computer system ... "can have 2–8 8411 drives for 14.5–58 megabytes capacity. The 8411 has a transfer rate of 156K bytes per second." using megabytes in a decimal sense Donald Morrison proposes to use the Greek letter kappa ("κ") to denote 1024 bytes, to denote 1024×1024, and so on.<ref name="Morrison"></ref> (At the time, memory size was small, and only 'K' was in widespread use.) Wallace Givens responded with a proposal to use "bK" as an abbreviation for 1024 and "bK2" or for 1024×1024, though he noted that neither the Greek letter nor lowercase letter "b" would be easy to reproduce on computer printers of the day. Bruce Alan Martin of Brookhaven National Laboratory further proposed that the prefixes be abandoned altogether, and the letter B be used to indicate a base-2 exponent in binary scientific notation, similar to E in decimal scientific notation, to create shorthands like 3B20 for 3×220 1969 IBM 1401 (a decimal machine) Simulator for IBM OS/360 "1401 features supported are advanced programming, sense switches, tapes, multiply, divide, 16K core, and all standard instructions except Select Stacker." "1401 core is simulated by 16,000 bytes of S/360 core obtained dynamically." "Enough core must be available to allow at least 70K for a problem program area. If tape simulation is not required, this core requirement may be reduced to 50K with the removal of the tape Buffer area." HIGH DENSITY PERMANENT DATA STORAGE AND RETRIEVAL SYSTEM is filed on March 17, 1969, earliest Google Patent search containing "kilobyte". "The data