Malcolm's ID 10 T service call  

Miriam was having trouble with her computer.  So Miriam called Malcolm the computer wiz-kid and asked him to come over and look at her computer. Malcolm clicked a couple of buttons and solved the problem.

Malcolm gave Miriam a bill for a minimum service call.  As he was walking away, Miriam called after him, "So, what was wrong?" He replied, "It was an ID ten T error."  Miriam didn't want to appear stupid, but nonetheless inquired, "An, ID ten T error?  Malcolm, what does that error mean, just in case I need to fix it again?"

Malcolm grinned, "Haven't you ever heard of an ID ten T error before?"

"No," Miriam replied.

"Write it down," he said, "and Miriam think you'll figure it out."

So Miriam wrote down...... I D 1 0 T.