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Unit 22. Page 387. Exercise 7. Listening.

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Good morning, everyone. Today we're going to talk about computers.

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So my first question is this.

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What would you do if your computer wasn't working?

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Would you run virus protection software? Andrea?

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Yes, I would. If a computer isn't working, the chances are it has a virus or a bug.

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Ah, yes, a bug. What does that mean?

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If your computer has a bug, is there an actual insect inside the computer? Diego?

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No, I don't think so.

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Maybe there is, sometimes.

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I think I've read that way back when computers were first being built,

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some people actually found a bug in a computer, and that's how the word got started.

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How can that be? I know that a bug is a glitch, some kind of programming error.

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You're right, but why is it called a bug? Does anyone know? Andrea?

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I just looked this up on my phone. It says that a lady named Grace Harper came up with the term.

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Well, people think that she invented the term, but she didn't.

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She only used it in a report.

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If the term bug hadn't already been invented, Harper would never have used it.

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Well, if Harper didn't invent the term bug, who did?

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We don't know who invented the term.

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It's been in use for at least a century, but it used to mean something like monster,

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and it referred to a general technology.

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So, who was Grace Harper, then?

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Here's the rest of the story.

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Back in 1947, Rear Admiral Grace Harper was a military expert in computing.

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Harvard University had a Mark II calculator, which was a kind of primitive computer.

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It wasn't working correctly, so investigators decided to open the machine up to see what was causing the problem.

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And guess what?

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They found a moth inside that could have been causing the problem.

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So, there was a real bug in the computer.

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Yes, there was.

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At that time, the Navy was working closely with Harvard University,

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so Grace Harper wrote a report about the incident.

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She was given credit for creating the terms bug and debug.

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She never claimed that she'd invented those terms,

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but she started using them to refer to computer problems, and other people did, too.

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So, I guess Harvard and the military should get the credit for starting to use the word the way we use it today.