Elcetronics 0.0 / 5 ? Design & Technology: Electronicselectronics GCSEAQA Created by: smithy98Created on: 30-04-15 13:10 What does CAD meal Computer Aided Design 1 of 13 What is the calculation for a time high 0.693 x (R1+R2) x C 2 of 13 What is the calculation for a time low 0.693x R2 x C 3 of 13 What is the calculation for mark space ratio Time high / Time low 4 of 13 What is a monostable A timer- it only has one stable state and when changed it will return after a set time 5 of 13 What is a bistable A latch- has two stable states and will stay in either unless acted upon by an external force 6 of 13 What is good about a monostable Cheap and for a short time constant timer 7 of 13 What is good a 555 I.C Cheap, been around a long time (reliable), repetative, accurate, digital 8 of 13 What is bad about a monostable Inaccurate, non repeatative, only turns outputs on, cant reset it to zero on the time constant 9 of 13 What is bad about the 555 I.C Easily damaged, cant be reset 10 of 13 What is a micro controller An I.C that is a blank canvas for us to tell what to do, there are a range of sizes and this gives us more outputs and inputs to use 11 of 13 What is a seven segment display A way of displaying numbers easily and clearly 12 of 13 In which order do the LED's identified on the seven segment display Clock wise, A,B,C,D,E,F,G and there is a dp at the bottom right of the display 13 of 13
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