Computers

I was having trouble with my computer. So I called Tim, the computer guy, to come over to my office. Tim clicked a couple buttons and solved the problem. He gave me a bill for a minimum service call. 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??" Tim 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."(I wrote…) I D 1 0 T