QBASIC Programming Fundamentals

QBASIC Statements

• The COLOR statement is used to display colors on the screen, taking two number values, where the first number sets the foreground color and the second number sets the background color.
• The PSET statement has the syntax PSET [X-coordinate (column), Y-coordinate (row), (Color of Pixel)].
• ATRAC3 should be installed into the system unit to open a .wav file.

Sound and Music

• The PLAY statement has the syntax PLAY 'String', where the string represents a series of alphabets, numbers, and symbols that collectively produce a musical string in terms of octaves, notes, and duration.
• In the SOUND command syntax, duration refers to the number of system clock ticks for which the sound plays.

Graphics and Display

• The word "graphics" is derived from the Greek word "graphikos", meaning "drawn" or "written".
• The LINE command has the syntax LINE (X1, Y1) - (X2, Y2), COLOR, (B, BF).

Error Handling and Sound

• The SOUND statement is used to produce a sound to draw the attention of the user to an error.
• The BEEP statement is used to play the system beep sound.

Audio Effects

• The effect of reverberation is known as chorus.

Computer Hardware

• The SOUND statement is used to produce a sound through the computer's Internal Speakers.

Test your understanding of QBASIC statements, including COLOR, PSET, and PLAY, as well as audio file handling. Learn how to use these statements to create visual and audio effects in your QBASIC programs.