JPS5710837A - Division overflow detection system - Google Patents
Division overflow detection systemInfo
- Publication number
- JPS5710837A JPS5710837A JP8532180A JP8532180A JPS5710837A JP S5710837 A JPS5710837 A JP S5710837A JP 8532180 A JP8532180 A JP 8532180A JP 8532180 A JP8532180 A JP 8532180A JP S5710837 A JPS5710837 A JP S5710837A
- Authority
- JP
- Japan
- Prior art keywords
- dividend
- divisor
- figures
- division
- register
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
- G06F7/38—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation
- G06F7/48—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using non-contact-making devices, e.g. tube, solid state device; using unspecified devices
- G06F7/52—Multiplying; Dividing
- G06F7/535—Dividing only
Abstract
PURPOSE:To immediately detect whether the quotient overflows or not, by combining codes of a dividend and a divisor, and directly comparing the dividend and the divisor, in case of a division for obtaining the quotient of (n) figures by a dividend of 2n figures and a divisor of (n) figures. CONSTITUTION:Numerical values are inserted into a register R1 and R2 for storing a dividend DD, and a register R3 for storing a divisor DR, and a result of division is stored in the register R2. Since an overflow condition of this quotient depends upon codes of the dividend DD and the divisor DR, gates 5-7, 8-10 are controlled by combination of the codes S, the divisor DR or its complement 3 is compared with higher rank figures 2-1-2n-2 of the dividend DD or its logical negation 4 by a comparator 1, and the overflow is detected by all figure zero of a lower rank n-1 figure of the dividend DD, together with a result of a deciding circuit 2. Its combination logic is executed by gates 13-22.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8532180A JPS5710837A (en) | 1980-06-24 | 1980-06-24 | Division overflow detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8532180A JPS5710837A (en) | 1980-06-24 | 1980-06-24 | Division overflow detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5710837A true JPS5710837A (en) | 1982-01-20 |
Family
ID=13855347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8532180A Pending JPS5710837A (en) | 1980-06-24 | 1980-06-24 | Division overflow detection system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5710837A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0351829A2 (en) * | 1988-07-19 | 1990-01-24 | Nec Corporation | Integer division circuit provided with a overflow detection circuit |
| JPH0375926A (en) * | 1989-08-18 | 1991-03-29 | Seiko Instr Inc | Divider for picture processing |
| FR2827683A1 (en) * | 2001-07-17 | 2003-01-24 | St Microelectronics Sa | Method of division of integer numbers, uses setting of flag registers before full result of division is available, so that processing can continue if result will not be used |
-
1980
- 1980-06-24 JP JP8532180A patent/JPS5710837A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0351829A2 (en) * | 1988-07-19 | 1990-01-24 | Nec Corporation | Integer division circuit provided with a overflow detection circuit |
| JPH0375926A (en) * | 1989-08-18 | 1991-03-29 | Seiko Instr Inc | Divider for picture processing |
| FR2827683A1 (en) * | 2001-07-17 | 2003-01-24 | St Microelectronics Sa | Method of division of integer numbers, uses setting of flag registers before full result of division is available, so that processing can continue if result will not be used |
| WO2003012625A1 (en) * | 2001-07-17 | 2003-02-13 | Infineon Technologies Ag | Digital value division method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR890015121A (en) | Division calculator | |
| JPS5710837A (en) | Division overflow detection system | |
| FR2438386B1 (en) | ||
| JPS5330241A (en) | Arithmetic unit | |
| JPS554178A (en) | Information control system | |
| SE8100735L (en) | DIGITAL PROCESSOR DEVICE | |
| JPS56147237A (en) | Operation processing device | |
| JPS5530772A (en) | Division processing unit | |
| JPS56117423A (en) | Binary coding circuit by multistage threshold level | |
| JPS5648714A (en) | Chattering noise eliminating circuit | |
| JPS57755A (en) | Information processor | |
| JPS56153446A (en) | Division system | |
| JPS5690343A (en) | Data normalization device | |
| JPS6486251A (en) | Interrupting device in computer | |
| JPS5452945A (en) | Floating decimal point arithmetic control unit | |
| JPH0797312B2 (en) | Arithmetic unit | |
| JPS578845A (en) | Indeterminate processing control system | |
| JPS5544224A (en) | Circuit system for race detection | |
| JPS5370639A (en) | 1-bit arithmetic operation circuit | |
| JPS56103740A (en) | Decimal divider | |
| JPS537367A (en) | Electronic watch with calculator | |
| JPS5710863A (en) | Electronic cash register | |
| JPS55150622A (en) | Pulse generating unit | |
| JPS56140754A (en) | Processor | |
| JPS57196350A (en) | Data processor |