> Computer Error

Joe was having trouble with his computer.
So he called Alan the computer guy to come over. Alan clicked a couple of buttons and solved the problem.
He gave Joe a bill for a minimum service call, and as he was going, Joe called after him, "So, what was wrong?"
Alan replied "It was an ID ten T error."
Joe did not want to appear stupid, but nonetheless enquired, "An ID ten T error? What's that, in case I need to fix it again?"
Alan grinned, "Haven't you ever heard of an ID ten T error before?"
No". Joe replied.
"Write it down" Allan said,, "and I think that you'll figure it out.
So Joe wrote it down.

ID10T