I'll have to stop using the computer and type my final draft with a typewriter. And so she did. Later that day, I found the problem. Books blocked the computer's cooling vent. Keeping the vent clear solved the problem.
Electronic circuits generate heat.
A temperature change can cause resistors to drift or cause transistors operating in their linear range to saturate. Therefore, you may have to measure the temperature of individual circuit components during a design evaluation test or during a field failure test. You may also have to measure the temperature in an enclosure to verify that the product's cooling vents and fans work properly. When you measure the effectiveness of your cooling vents and fans, you often need to measure at least two temperatures. The difference between the vent's input and output temperatures tells you how well the electronics are being cooled.