Equation Calculations (Eqn) - Casio fx-991ZA Plus User Manual

To calculate 15
the result to hexadecimal, binary, and octal
Logical and Negation Operations
Your calculator provides you with logical operators (and, or, xor, xnor) and
functions (Not, Neg) for logical and negation operations on binary values.
Use the menu that appears when you press 13(BASE) to input these
logical operators and functions.
All of the following examples are performed in the binary mode (l(BIN)).
To determine the logical AND of 1010
A 1010 13(BASE)1(and) 1100 =
To determine the logical OR of 1011
A 1011 13(BASE)2(or) 11010 =
To determine the logical XOR of 1010
A 1010 13(BASE)3(xor) 1100 =
To determine the logical XNOR of 1111
A 1111 13(BASE)4(xnor) 101 =
To determine the bitwise complement of 1010
A13(BASE)5(Not) 1010 )=
To negate (take the two's complement) of 101101
A13(BASE)6(Neg) 101101 )=
Note: In the case of a negative binary, octal or hexadecimal value, the
calculator converts the value to binary, takes the two's complement, and
then converts back to the original number base. For decimal (base-10)
values, the calculator merely adds a minus sign.

Equation Calculations (EQN)

You can use the following procedure in the EQN Mode to solve simultaneous
linear equations with two or three unknowns, quadratic equations, and cubic
equations.
1. Press N5(EQN) to enter the EQN Mode.
2. On the menu that appears, select an equation type.
To select this calculation type:
Simultaneous linear equations with two
unknowns
Simultaneous linear equations with
three unknowns
× 37
in the decimal mode, and then convert
10 10
Ax(DEC) 15 * 37 =
EN-30
6(HEX)
l(BIN)
0000001000101011
i(OCT)
and 1100
2 2
0000000000001000
and 11010
2 2
0000000000011011
and 1100
2 2
0000000000000110
and 101
2 2
1111111111110101
(Not(1010
2
1111111111110101
1111111111010011
Press this key:
1(a
X + b
n
2(a
X + b
n
0000022B
00000001053
(1010 and 1100
2
(1011 or 11010
2
(1010 xor 1100
2
(1111 xnor 101
2
))
2
(Neg(101101
2
Y = c )
n n
Y + c Z = d )
n n n
555
)
2
)
2
)
2
)
2
))
2