Casio Cassiopeia IT-700 Manual de usuario descargar pdf (Pagina 3)

With the main batteries removed, the

lithium battery will protect the standard

4K of RAM for 10 months; for 16K of

RAM the protection period drops to 2.5

months. Again, according to the manual,

the life span of the AA cell is

approximately 100 hours for continuous

use.

One final point worth mentioning is

that when the batteries need to be

changed, no loss of program will result if

one supply is removed at a time. During

this operation the PB-700 should be

switched off.

For those fully familiar with Basic

programming, the PB-700 command list

booklet is all you need to start using the

unit. This has 22 pages and contains lists

of manual commands, program

commands, numerical functions and

character functions. Also included are

lists of error messages and operations, a

character code table and plotter

commands.

Included in this article is a list of the

various commands and functions which

demonstrate that the PB-700 is certainly

a fully-fledged computer capable of use

in many applications.

For those who are programming

novices, the manual accompanying the

PB-700 is invaluable. While other books

on Basic would be useful as background,

the PB-700 manual, entitled "Easy Trip

to Basic", contains all the needed

information and instruction.

With 326 pages, the manual has six

chapters which go into every aspect of

Basic which the PB-700 encompasses.

There are also quite a few sample

programs which demonstrate particular

Basic commands and functions.

PB-700 capabilities

As depicted in the accompanying list,

the PB-700 has 38 separate commands

and 29 separate functions. Most of these

require little comment and are fully

explored in the manual.

One of the more interesting

If you

forget the password though,

you have a problem. The only way to

solve the problem is by first dumping

the

said programs onto tape and then using

the NEW ALL command or removing

the batteries. Of course, if you can still

remember the password, it is a simple

matter to release it and gain access to the

program area for alterations and erasure.

The SYSTEM command informs

which program locations are already

used, the number of bytes of RAM left,

the type of angle measurement used, for

example degrees, and the program area

currently being accessed.

A random number generator is also

provided on the PB-700. It takes the

usual form of RND; in other words

when the PB-700 executes this numerical

function, numbers are randomly

generated in the range 0 to 1.

So to gauge the performance, two lots

of 10,000 random numbers were

generated which were then averaged to

give the following results: 0.5033 in the

first instance and 0.5052 in the second

instance.

Since a perfect score would be 0.5

exactly, the PB-700 really performs very

well in this exercise.

All the usual numerical functions are

also included in the PB-700, for example

SIN, COS and EXP. As well there is a

useful set of Character Functions, such

as CHR$ and ASC.

commands is called PASS. This

command prevents the accidental

erasure or alteration of programs that

may have taken a great deal of effort to

create.

The PASS command is used quite

simply by typing, for example, PASS

"FRED" and then return/line back. This

now protects all 10 program locations

which are normally accessed by pressing

"Shift" and then one of the numeric

keys. This does not stop the programs

from being used or examined but you

can no longer alter them, write over or

erase them.

ELECTRONICS Australia, November, 1984

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