word processor 606 handles the inflow and out-flow of byte-oriented input/output data and interleaved signals at a rate of, for example, 500 kilobytes per second. Instruction processing rates of four to eight per microsecond are required for such a data flow." Memory Control System is filed on October 29, 1969 "FIG. 2a shows a practical example of an operand address which consists of, for example 24 bits. It is assumed herein that each block includes 32 bytes, each sector includes 1 kilobyte, the buffer memory 116 includes 4 kilobytes, and read data is represented by one double word or 64 bits, as one word in this case consists of 32 bits." IBM System/360 Component Descriptions (IBM 2314 Direct Access Storage Facility) "Each module can store 29.17 million bytes or 58.35 million packed decimal digits ... total on-line storage capacity is 233.4 million bytes" "Each 11-disc pack (20 surfaces) has a storage capacity of 29 megabytes; maximum storage capacity with the largest version using a ninth drive as a spare) is 233,400,000 bytes." DEC PDP-11 (a binary-addressed machine) Handbook "PDP-11 addressing modes include . . . and direct addressing to 32K words" (Page 2) This appears to be the only use of 'K' in this manual, though; elsewhere sizes are spelled out in full. Contrast the 1973 PDP-11/40 Manual, which defines 'K' as 1024. (Below) "... each removable disc has a capacity of 2.3 million bytes or 3.07 million 6-bit characters. Up to four drives can be attached to a single controller, resulting in a total storage capacity of 9.2 megabytes." Usage of "million" and in decimal sense to describe HDD. 1970s 1970 "The following are excerpts from an IBM Data Processing Division press technical fact sheet distributed on 30 June 1970. Users of the Model 165 will have a choice of five main core storage sizes, ranging from 512,000 to over 3-million bytes. Seven main memory sizes are available for the Model 155, ranging from 256,000 to over 2-million bytes." "Each of the five system/360 model 75 computers (Fig. 2) has one megabyte of primary core storage plus four megabytes of large core storage (LCS, IBM 2361)." 1971 IBM System/360 Operating System: Storage Estimates, uses K in a binary sense approximately 450 times, such as ""System/360 Configuration: Model 40 with 64K bytes of storage and storage protection." Note the letter "K" is also sometimes used as a variable in this