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CHAPTER
2°
Manual Operations
Example:
Display the small letters a, b and c.
First specify the extension mode.
.
EXT lights up.
ex
Then input A, B and C.
RUN DEG
|
Example:
Display the marks
### 4.
Since the computer is already in the extension mode, just press each of the
relevant key after pressing the @] key.
BUZZER EXT
ABC
ghe
BUZZER EXT
shoeeee_
|
(ee) Gar] Ba] Gary] >
Example:
Display the symbols Eiip .
Press keys as shown below in the extension mode:
BUZZER
EXT
RUN DEG
GAP Ga) P GaP
_
ahoeeeae tip.
Since the above marks and symbols are available, they may be used for various
purposes. To cance
disappears.
Now we believe you understand key operations. While you are practicing key
operation, "Error 2" may be displayed and the pressed key. locked. This is not
a trouble but a message that the wrong operation has been performed. It is there-
fore called the "error message." In such a case, press the 6) key. Then'the error
message will disappear and the computer will become operable again. There are
several kinds of such error messages. For details, see page 242.
the extension mode, press &] again and the "EXT" symbol
2-2 Begin with the Four Arithmetic Operations
Try simple calculations. Bear in mind that there is a priority sequence in opera-
tion, i.e., multiplication and division take precedence over addition and sub-
traction.
Example 1:
234+4.5—53=—
25.5
Operation
n
a
=
ASB
@OBbebSes
=
al
*From here on, numerals will be no longer placed in boxes.
Example 2:
56X(— 12)+(—2.5)
=268.8
Operation
56HE 12062 .5a
265,8
*In the case of a negative numeral, press the ©) key before pressing the numeral
key.
Example 3:
7X8—-4X5=36
Operation
7086
4H) 5b
*Multiplications are executed first, followed by subtraction.
Example 4:
(4.5% 1075)
X (—2.3X
10778)
= —0.01035
Operation
4.5075@6)2..3H5)7 8b
*For exponent display, input an exponent after pressing the ©) key.
19
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