maximum and minimum memory - analogue voltages remembered . . . . . digitally!

The anemometer featured in our October 1983 issue contains a memory which stores the minimum and maximum windspeeds measured in the form of positive analogue voltages. A simple addition can make this memory store negative values also. The resulting maximum and minimum memory is suitable for a number of applications. As an example of these we describe an electronic version of Six"s famous thermometer; other possibilities are left to your own ingenuity and imagination. maximum and minimum memory elektor June 1984 maximum and minimum memory The amateur meteorologists among you were no doubt delighted with the anem- ometer and wind direction indicator published in our October 1983 and January 1984 issues respectively. Your weather station can now be augmented with an electronic maximum and minimum thermometer. Such a thermometer, using alcohol instead of electronics, was in- vented by the British physicist Six. It enables the recording of both the highest and the lowest temperatures r...