JPS6462727A - Adder-subtracter - Google Patents
Adder-subtracterInfo
- Publication number
- JPS6462727A JPS6462727A JP22070087A JP22070087A JPS6462727A JP S6462727 A JPS6462727 A JP S6462727A JP 22070087 A JP22070087 A JP 22070087A JP 22070087 A JP22070087 A JP 22070087A JP S6462727 A JPS6462727 A JP S6462727A
- Authority
- JP
- Japan
- Prior art keywords
- zone
- data
- format
- carry
- setting control
- 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
Abstract
PURPOSE:To operate data of a zone format in a state that it remains at a zone format, by changing a pattern of a zone part so that the carry can be executed automatically in a numerical value part, as if it is a back format. CONSTITUTION:A zone part of data d1 is set to 0(0000) by a zone part setting control part 5, and a zone part of data d2 added or subtracted to or from the data d1 is set to 9(1001) by a zone part setting control part 6. An arithmetic part 1 executes a decimal operation with regard to each digit of a numerical value part of the data d1, d2, and a carry is brought to carry as it is to the zone part of the upper side. A zone part setting control part 7 sets the zone part of an output of the arithmetic part 1 to F (being a binary number 1111 and having no meaning in a binary coded decimal code). In such a way, by operating data of a zone format by the zone format as it is, it becomes unnecessary to convert a data format, and the calculation can be executed at a high speed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22070087A JPS6462727A (en) | 1987-09-03 | 1987-09-03 | Adder-subtracter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22070087A JPS6462727A (en) | 1987-09-03 | 1987-09-03 | Adder-subtracter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6462727A true JPS6462727A (en) | 1989-03-09 |
Family
ID=16755121
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP22070087A Pending JPS6462727A (en) | 1987-09-03 | 1987-09-03 | Adder-subtracter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6462727A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1992008188A1 (en) * | 1990-11-02 | 1992-05-14 | Seiko Epson Corporation | Semiconductor device |
-
1987
- 1987-09-03 JP JP22070087A patent/JPS6462727A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1992008188A1 (en) * | 1990-11-02 | 1992-05-14 | Seiko Epson Corporation | Semiconductor device |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS6462727A (en) | Adder-subtracter | |
JPS5710832A (en) | Personal computer | |
JPS6462726A (en) | Adder-subtracter | |
EP0326182A3 (en) | High speed digital signal processor for signed digit numbers | |
JPS5657158A (en) | Computer | |
JPS5438199A (en) | Calculation board | |
JPS5374467A (en) | Electronic watch | |
JPS57106812A (en) | Data conversion system between inch and millimeter | |
JPS53112383A (en) | Digital controller | |
JPS54107629A (en) | Key input unit | |
JPS5315727A (en) | Electronic desk-top calculator | |
JPS5582337A (en) | Abacus-type desk computer | |
JPS6486240A (en) | Arithmetic processing system | |
JPS57182827A (en) | Keyboard device | |
JPS52115984A (en) | Sequence controller | |
JPS56120973A (en) | Miniature electronic equipment | |
JPS56153451A (en) | Attribute conversion system | |
JPS5510688A (en) | Control circuit | |
JPS56143007A (en) | Control system for process advanced type programmable sequence controller | |
JPS57211643A (en) | Power calculating device | |
JPS52140248A (en) | Electronic desk-top computer | |
JPS5442904A (en) | 2-out-of-5 signal input circuit | |
JPS5797486A (en) | Electronic timepiece | |
JPS6434750A (en) | Automatic drafting machine | |
JPS6482247A (en) | State setting circuit |