In one of the rooms of your magazine for the last years drew attention to the Council graphitize — a convenient box with a piece of lace for sharpening a slate pencil. I propose to use for the same purpose a small tin can: othernote inside cover stick-on sandpaper — graphite in the sharpener will sypitsya to the bottom.
L. MAKSUTOV, Vratsa
Recommend to read
PWM — A NEW OPPORTUNITY
For the computer control various devices and objects I propose to use the method of pulse width modulation (PWM) is equally successful when working with different PCs: Intel-80286 to...
Incubator for your farm
With the development of cooperatives in our country, the number of people wishing to apply their knowledge and skills in the agricultural sector, for example, in creating an apiary,...
