Citizen Systems SR-135N User Manual

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2009/3/26

E3 -

(2)

[

]

: 1. Clear entry key.

2. Factorial function (x!).

x! = n x (n–1) x (n–2) x (n–3) x .....x 2 x 1

(3) [OFF] : Power off key.
(4) [SHIFT] : This is the key for specifying the second function. When

this key is pressed, the special display “SHIFT” lights.
When this key press twice continuously, the second
function mode releas.

(5)

[

]

DRG

: a. Pressing this key will change the mode of angle unit

sequentially

DEG

RAD

GRAD

and display it

on LCD.

b. Pressing this key after [SHIFT] key shall change the

mode of angle and shall convert the displayed data.

DEG

→ RAD : RAD = DEG x π/180

RAD

→ GRAD : GRAD = RAD x 200/π

GRAD

→ DEG : DEG = GRAD x 180/200

(6) [0] ~ [9] : Press these keys in their logical sequence to enter

numbers.

(7)

[ ]

RND

: a. Use to set the decimal point when entering numbers.

b. When press as the first number, it is regarded as [0]

and [ • ] keys are pressed.

c. Random as a second function.

Pressing this key shall display the random number.

The range of random number is 0.000~0.999.

(8) [+/–] : a. In setting data in the mantissa section, this key reverse

code in the mantissa section similarly for exponent
section, it reverse code in the exponent section.

b. For the operation result, this key reverse code in the

mantissa section.

(9) [+], [–], [x], [

], [ ( ], [ ) ]

a. When the key operations are performed by these keys

according to a numerical expression, a result of operation is
obtained according to mathematical priorities. Priorities
discriminated are:

1) 1-variable function.

2) Expression in "( )"; (The most inner expression has priority

in case of multiple parenthesis)

5) +, –