A Guide to IBM 1401 Programming |
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Page 55
... multiply to get the gross pay . Multiplication in the 1401 is a special feature that permits use of built - in machine hardware . ( In the absence of this special feature multiplication can be programmed . ) On a Multiply instruction ...
... multiply to get the gross pay . Multiplication in the 1401 is a special feature that permits use of built - in machine hardware . ( In the absence of this special feature multiplication can be programmed . ) On a Multiply instruction ...
Page 56
... multiply operation the B - field will have zone bits in the units position of the product only . The multiply operation uses algebraic sign control : Multiplier sign Multiplicand sign Sign of product +++ 11+ 1 + 1 11+ Rule 4. Zone bits ...
... multiply operation the B - field will have zone bits in the units position of the product only . The multiply operation uses algebraic sign control : Multiplier sign Multiplicand sign Sign of product +++ 11+ 1 + 1 11+ Rule 4. Zone bits ...
Page 133
... Multiply by 0.25 , which is required to " compress " a number that could be as large as 19998 into a number no larger than 5000 , giving 3395. Add the base address , giving the final result : 35395 . 2. Split the key into two parts , ...
... Multiply by 0.25 , which is required to " compress " a number that could be as large as 19998 into a number no larger than 5000 , giving 3395. Add the base address , giving the final result : 35395 . 2. Split the key into two parts , ...
Contents
The Nature of Data Processing | 1 |
Introduction to Computing Equip | 13 |
Branching | 62 |
Copyright | |
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Common terms and phrases
A-address application Autocoder B-address register B-field blank block diagram Branch If Indicator carriage central processing unit CHAR character position Clear Storage COBOL columns contains core storage d-character data processing deck digits disk storage district error example executed field flow chart FORMAT Mnemonic FORTRAN group mark Halt high-order position index register instruction inventory invoice last card LINE COUNT loop machine magnetic tape master file master record Move Characters multiply object program Op Code OPERAND ADDRESS operation code picking sequence print area print storage printer procedure processor product number punched cards Read a card REVIEW QUESTIONS routine sales cards salesman shown in Figure source program space specified stacker stored struction subroutine summary symbolic programming Symbolic Programming System tape mark tape unit tion track unit price Write Disk written zero zero suppression zone bits