Sharp OZ-707 Operation Manual - Page 19

• "&H" represents a hexadecimal value.

•

If you attempt decimal-to-hex conversion

on

a negative decimal

number, the Card Internally performs "two's complement" calculation

and shows the result in 16's complement.

• The

B

key may be used to reverse the sign of the numeric data

now in the display. If the sign of a positive hex number is reversed,

the complement of the positive number will

be

displayed.

• When

you

wish conversion between decimal and hex numbers, use

the following assignment statements:

From decimal to hex: A$=HEX$ N

From hex to decimal:

N=VAl

("&W+A$) or N=&H4F3

The allowable ranges of hex numbers are:

0

~

x

~

2540BE3FF

and FDABF41C01

~

x

~

FFFFFFFFFF.

-

Reference -

Expressions composed of relational operators

(=,

>, <, >

=,

<

=,

<

»

can take

on

the values listed in the following table:

x and y represent numeric values.

.

-1

if

x

=

y

-1

if

x

i?:;y

=

0

if

x~y

>=

0

ifx<y

-1

if

x>y

-1

ifx

:iy

>

<=

0

if

x:iy

0

if

x>

y

-1

if

x<y

-1

if

x

~y

(

"<>"

)

<

<>

i

fx

=y

means

"~"

0

if

x

i:;

y

0

•

If, for example, "A = numeric value" or "B

=

formula" is used

in

a

logical equation, the computer will not treat it as a logical equation

but as

an

assignment statement for variables. When using an equal

(=) sign

in

a !ogical equation, use it in the form of "numeric value =

A" or "formula

=

B",

with the exception of conditional expressions

used

in

IF statements.

Direct Calculation Feature

In the manual calculations described up to now, the

I

ENTER

I

key has

always been used to terminate a formula and obtain the calculation

result of the formula. However, you can directly operate the functions

of

the computer with the desired function key (without operating the

I

ENTER

I

key) when the objective numeric data is in the display.

26

Example:

Determine sin 30° and

a!.

Operation:

DEGREE

I

ENTER

I

I

C-cE

I

3 0

[][J]

Operation:

I

c

e

CE

lal12ndFIII

nl

II

I

S IN

3e

FACT

8

40323

Examp!~:

5

.

5

.

For tan

12'

first check the result of

12

'

then determine tan-

1

1

5

2 .

Operation:

DEGREE

I

ENTER

I

5

I :

112

I

ENTER

1112l1li

F

II

~

YAIr

'

11

DEGREE

5/12

4.

166666667E-01

ATN

4.

166666667E

-131

22.61986495

Note that this "direct" calculation mode

is

not available for functions

requiring the entry of more than one numeric value (binominal

functions) such

as

power, root, or coordinate conversion.

The direct calculation feature

is

not effective for formulas:

(e.g.)

It

CE

I

i

[K]

4~

5*4_

~

~5*4LOG_

If

no

data is

on

the display, pressing a function key will display the

corresponding BASIC command.

The direct calculation feature

is

effective only for numeric values.

Therefore, if hexadecimal numbers

A

to F are entered for hex to

decimal conversion, the direct calculation feature will remain

inoperative.

In

such a case, perform

an

ordinary manual calculation

using the

I

ENTER

I

key.

27

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Sharp OZ-707 Operation Manual - Page 19

Reference, Direct Calculation Feature, Example, Operation

Page 19 highlights