发明名称 |
Method and apparatus for computation stack recovery in a calculator. |
摘要 |
<p>A method and apparatus for recovery of a computation stack in a calculator is presented in accordance with a preferred embodiment of the present invention. In a calculator employing a stack for the storage of data to be utilized in a calculation, provision is made to store the contents of the stack before a calculation is performed. If, after the calculation is performed a user desires to "undo" the calculation, he may strike an "undo" key. The original state of the stack is then restored.</p> |
申请公布号 |
EP0272821(A2) |
申请公布日期 |
1988.06.29 |
申请号 |
EP19870310608 |
申请日期 |
1987.12.02 |
申请人 |
HEWLETT-PACKARD COMPANY |
发明人 |
GRODD, LAURENCE W.;WICKES, WILLIAM CASTLES |
分类号 |
G06F15/00;G06F3/02;G06F11/14;G06F15/02 |
主分类号 |
G06F15/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|