Casio FX-991ES User Guide - Page 56

Negative Number Calculations and Logical, Operations

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Specifying the Base during Input The BASE-N Mode lets you override the current default number base setting and input a particular value using a different base. When inputting the value, press 13(BASE) c to display page two of the BASE menu, and then press the number key that corresponds to the base you want to specify. Press this key: To specify this number base: 1(d) Decimal (Base 10) 2(h) Hexadecimal (Base 16) 3(b) Binary (Base 2) 4(o) Octal (Base 8) The key operation below shows how to input a value of 3 using the decimal number base, for example. Ab13(BASE)c1(d)3 The value you input here is decimal number base. Appendix Calculate 12 + 12 in binary. Calculate 78 + 18 in octal. Calculate 1F16 + 116 in hexadecimal. Convert the decimal value 3010 to binary, octal, and hexadecimal. Transform the result of 510 + 516 to binary. k Negative Number Calculations and Logical Operations To input a negative number calculation or logical operation command, press 13(BASE) to display page one of the BASE menu, and then press the number key that corresponds to the command you want to specify. Press this key: When you want to input this: 1(and) Logical operator "and" (logical product), which returns the result of a bitwise AND 2(or) Logical operator "or" (logical sum), which returns the result of a bitwise OR 3(xor) Logical operator "xor" (exclusive logical sum), which returns the result of a bitwise XOR 4(xnor) Logical operator "xnor" (exclusive negative logical sum), which returns the result of a bitwise XNOR E-54

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E-54
Specifying the Base during Input
The BASE-N Mode lets you override the current default number base
setting and input a particular value using a different base. When
inputting the value, press
1
3
(BASE)
c
to display page two of
the BASE menu, and then press the number key that corresponds
to the base you want to specify.
Press this key:
To specify this number base:
1
(d)
Decimal (Base 10)
2
(h)
Hexadecimal (Base 16)
3
(b)
Binary (Base 2)
4
(o)
Octal (Base 8)
The key operation below shows how to input a value of 3 using the
decimal number base, for example.
Ab1
3
(BASE)
c
1
(d)
3
The value you input here is decimal number base.
Appendix
<#080>
Calculate 1
2
+ 1
2
in binary.
<#081>
Calculate 7
8
+ 1
8
in octal.
<#082>
Calculate 1F
16
+ 1
16
in hexadecimal.
<#083> Convert the decimal value 30
10
to binary, octal, and
hexadecimal.
<#084>
Transform the result of 5
10
+ 5
16
to binary.
k
Negative Number Calculations and Logical
Operations
To input a negative number calculation or logical operation command,
press
1
3
(BASE) to display page one of the BASE menu, and
then press the number key that corresponds to the command you
want to specify.
Press this key:
When you want to input this:
1
(and)
Logical operator “and” (logical product), which
returns the result of a bitwise AND
2
(or)
Logical operator “or” (logical sum), which returns
the result of a bitwise OR
Logical operator “xor” (exclusive logical sum),
3
(xor)
which returns the result of a bitwise XOR
Logical operator “xnor” (exclusive negative
4
(xnor)
logical sum), which returns the result of a bitwise
XNOR