JPH01100241U - - Google Patents
Info
- Publication number
- JPH01100241U JPH01100241U JP19484887U JP19484887U JPH01100241U JP H01100241 U JPH01100241 U JP H01100241U JP 19484887 U JP19484887 U JP 19484887U JP 19484887 U JP19484887 U JP 19484887U JP H01100241 U JPH01100241 U JP H01100241U
- Authority
- JP
- Japan
- Prior art keywords
- memory
- external memory
- address space
- small electronic
- electronic calculator
- 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
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Calculators And Similar Devices (AREA)
Description
第１図はこの考案の一実施例の回路構成を示す
ブロツク図、第２図は同実施例の要部を示す回路
構成図、第３図は同実施例に用いられるメモリの
アドレス空間を説明するための図、第４図は同実
施例のメモリ構成を説明するための図である。
１…計算機本体、２…キー入力部、３…ＣＰＵ
、４…表示部、５…ＲＯＭ、６…ＲＡＭ、７…外
部メモリ、３１…制御部、３２…アドレス制御部
、３３，３８…データラツチ、３４〜３７…アド
レス空間、４１…内部メモリ、４２〜４５…外部
メモリ。
Fig. 1 is a block diagram showing the circuit configuration of an embodiment of this invention, Fig. 2 is a circuit diagram showing the main parts of the embodiment, and Fig. 3 explains the address space of the memory used in the embodiment. FIG. 4 is a diagram for explaining the memory configuration of the same embodiment. 1... Computer main body, 2... Key input section, 3... CPU
, 4...Display unit, 5...ROM, 6...RAM, 7...External memory, 31...Control unit, 32...Address control unit, 33, 38...Data latch, 34-37...Address space, 41...Internal memory, 42- 45...External memory.
Claims (1)
小型電子式計算機において、内部メモリおよび外
部メモリのアドレスを指定するアドレス指定手段
と、このアドレス指定手段により指定されるアド
レス空間の任意の位置を上記内部メモリまたは外
部メモリ用として設定するアドレス空間設定手段
とを具備したことを特徴とする小型電子式計算機
。 In a small electronic calculator that can be equipped with an external memory in addition to the internal memory, there is provided an addressing means for specifying the addresses of the internal memory and the external memory, and an arbitrary position in the address space specified by the addressing means. A small electronic calculator characterized by comprising address space setting means for setting a memory or an external memory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19484887U JPH01100241U (en) | 1987-12-24 | 1987-12-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19484887U JPH01100241U (en) | 1987-12-24 | 1987-12-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01100241U true JPH01100241U (en) | 1989-07-05 |
Family
ID=31485555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19484887U Pending JPH01100241U (en) | 1987-12-24 | 1987-12-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01100241U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01195555A (en) * | 1988-01-29 | 1989-08-07 | Mitsubishi Electric Corp | Microcomputer |
-
1987
- 1987-12-24 JP JP19484887U patent/JPH01100241U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01195555A (en) * | 1988-01-29 | 1989-08-07 | Mitsubishi Electric Corp | Microcomputer |
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