"You can't harm the computer". I had a TRS-80 and my idea of fun was to write a short BASIC program that would poke random values into random addresses. Sometim

"You can't harm the computer". I had a TRS-80 and my idea of fun was to write a short BASIC program that would poke random values into random addresses. Sometimes it would change a character in the program that would halt it, sometimes it would lock up. Just a quick off and on and try it again.