Sharp EL-9900 User Manual

The TOOL menu contains items to help calculating in different number systems, as

well as to help solve both linear and polynomial equation. Press 

@ V to

access the TOOL menu. Press the 

# key (or @ q) to escape from the

menu.

Calculations can be performed in different number base systems,

while simultaneously converting the calculation result into

hexadecimal, decimal, octal, and binary systems.

1. While this menu item A

NBASE is selected, press

the 

E key. The NBASE

tool opens, with the cursor

set at HEX: (hexadecimal).

2. Type 1B 

| 9, for example. When entering the hexadecimal

B, simply press the 

B key; using the A key will call up

the variable B instead.

3. When done entering the

hexadecimal expression,

press 

E. The calculation

result will be displayed in

three other number base

systems, as well as in

hexadecimal format.

Numerical values in binary, octal, and hexadecimal modes can be

expressed in the following number of digits:

Binary: 16 digits

Octal: 10 digits

Hexadecimal: 10 digits

If you enter a number exceeding the range specified above for

calculations or conversions, the calculator will return an error.

If the answer exceeds the above range, the calculator will also

return an error.

Decimals can be used for DEC mode only (

. cannot be used

in the other modes).  If you convert decimal values to binary,

octal, or hexadecimal number, the decimal part is discarded and

only the integer part is converted.

When numerical values of binary, octal, and hexadecimal modes

are negative, the display is switched to complements of 2.