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A testcard is something that comes on your TV in the middle of the night. A testcard usually comes on when a channel is off the air. If you ever couldn't get to sleep one night and suppose you wanted to watch TV? Well if you watch TV this early that means when you flip through the channels you may find some channels that have color tests on them. Color tests are a rainbow color and they usually make a annoying beeping sound. But not all color tests are rainbow. Some can be pictures or a picture with words printed on it or sometimes they can even be different shades of green. The rainbow color test is the most common but sometimes the green one can appear. Mostly the channels would have more rainbow color tests then green ones. This is because the green testcard is very rare. Now there's your answer
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What does a testcard look like?
It looks like this:
Could you name any of the bands who played on bbc testcard in the 1980s?
In the 1980s, the BBC Test Card featured performances by several notable bands, including The Jam, The Smiths, and The Cure. These performances were part of the test card's occasional use to showcase music in between programming. The Test Card itself became iconic and is remembered fondly by many viewers from that era.
