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| Calculator Key Legend: | Cambridge Z88 Key Equivalent: | Function: | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Clear | C | Clear | |||||||||
| DEL |
| Delete last keypress | |||||||||
| StoM | S | Store to memory 0 to 9 | |||||||||
| RclM | R | Recall from memory 0 to 9 | |||||||||
| 0 to 9 | 0 to 9 | Enter digit | |||||||||
| . | . | Decimal point | |||||||||
| Unit | U | Convert units (see below) | |||||||||
| Y<>x | Y | Swap y and x | |||||||||
| sIgn | I | Change sign | |||||||||
| Fix | F | Number of decimal places | |||||||||
| % | % | Percentage (see below) | |||||||||
| + | + or P | Plus | |||||||||
| x | X, * or T | Times | |||||||||
| - |
| Minus | |||||||||
| / | /, \ or D | Divide | |||||||||
| = | = | Result |
Entering numbers
Enter a number by selecting the digits with the cursor keys, and press
| Highlight | ||||||
|---|---|---|---|---|---|---|
| ||||||
ENTER |
| Highlight | ||||||
|---|---|---|---|---|---|---|
| ||||||
DEL |
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All calculations are performed to an accuracy of nine decimal places, and numbers can lie between 1E38 and 1E-38. The Calculator displays Error if an error, such as 1/0, occurs.
Display format
The format in which numbers are displayed can be altered with the Fix operation, which gives the prompt
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Typing a number between 0 and 8 will fix the number of decimal places displayed to the specified number; the initial value is 2. Typing 9 will give free format.
Constants
Entering a number, followed by one of the arithmetic keys pressed twice, stores the operation as a constant operation and displays the operator with K at the top right-hand corner of the screen.
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gives the result 2300.00.
Storing and Recalling
You can store a result for use later in a calculation with the StoM and RclM operations.
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recalls the result from register 9.
Percentages
The '%' key works in conjunction with one of the other keys '*', '/', '+', or '-' to calculate percentages, and to add or subtract a given percentage to or from a number. The following examples illustrate each of these cases.
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Likewise, to discount 125 by 15% enter
125 * 15 % -
Converting units
You can convert any result between the pairs of units displayed on the CONVERT menu by selecting the Unit operation.
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