ID- ten -T -error

I was having trouble with my computer. So I called Richard, the 11-year-old next door whose bedroom looks like Mission Control, and asked him to come over. Richard clicked a couple of buttons and solved the problem. As he was walking away, I called after him, "So, what was wrong?"He replied, "It was an ID- ten -T - error." I didn't want to appear stupid, but nonetheless inquired, "An ID ten T error? What's that? In case I need to fix it again." Richard grinned.... Haven't you ever heard of an ID ten T error before?

"No," I replied.

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

So I wrote it down: I D 1 0 T