VTech Precomputer Power Pad Plus SOUND, FOR ... TO ... STEP ... NEXT, FUNCTION, 60FOR ITEMS=1 TO, 70INPUT PRICE, 80SUM=PRICE+SUM, 90NEXT ITEMS

SOUND

This is a command to generate a sound note.

SOUND consists of two functions: frequency and duration

frequency The frequency of the sound in hertz; a value in the range

0 < frequency parameter < 256

duration The number of the system clock ticks so the sound lasts; a value in the range

0 < duration parameter < 256

FOR ... TO ... STEP ... NEXT

Line# FOR variable = initial value TO final value STEP stepsize (optional)

Line#

Line#

Line#

Line# NEXT variable

The FOR ... NEXT statement repeats a task a set number of times without having to rewrite it. All statements between the FOR and NEXT command are repeated based on the initial value, the final value and the stepsize. If the STEP portion of the command is not used, it is assumed to be 1.

Example:

60FOR ITEMS=1 TO 20

70INPUT PRICE

80SUM=PRICE+SUM

90NEXT ITEMS

RUN

FUNCTION

A function is a mathematical procedure which when applied to a certain value will give a new value. We call the value in brackets ( ), the argument, and the new value, the result.

Example:

SQR is a square root function.

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