Apple II - Page 57

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Imporlanl
• Option-Control-Reset to start a diagnostic self-test. (You don't
need 10 perform this lest unless you suspea something's WTOng
with your computer.) 1bc lest lasts about 20 seconds. During that
time,
moving patterns appear on the screen, indicating that the
ICSt is running. 1bc mess<Jgc SYSTE."1 0]1( means your computer is
heallhy. If you gel :my other message, consult your :lUthOri7.ed
Apple dealer.
Whene\l9( you press a Resel key comblnorlon. cJ:wcro(s reletose the
Reset key rnt. (It the command doesn't work the ftrst lime. try agan.
mokng us to release Reset 1'11'$1,)
Keys unlike typewriter keys
People sometimes type the letters 1 and 0 imerchangeably wim the
numbers 1 and 0 on a typewriter But a computer gives completely
different values to letters and numbers. So, if you type lellers
instead of numbers, the computer may respond wilh an error
mesnge.
On :a typewriter, a space is exactly that, an afC:i on the paper where
nolbing is typed. Ilowever, on a romp.Her, pressing the Space bar
insertS :a Space chartlCleT. Just as an 1 (el) :md a 1 (one) are different,
50 is :I. Splice chal'3oer and the spllcc lert by pressing Right Arrow
When working with a data base progr.lm, spaces are also imporunL
for example, Ihc word Jones and the word jones followed by a Sp3ce
;lIrC as different as Jones and Smtih.
Keys on the numeric pod
The keys on the numeric pad are arl'3nged like those on a calculator
to make entering numbers and arithmetic formulas easier. The
Enter key operates just like the Return key. "111c Esc key works like the
Esc key on the main keyboard .
Keyboard review 39