Digital Electronics Objectives Part 10
181 . Two flip-flop is needed for a 4 bit counter.
182 . Multiplexer is used as a data selector.
183 . The op. amp. Is used in shift register.
184 . The circuit shown in Fig. 32 represents a half adder.
185 . DC forward voltage is needed to emit light in case of LED.
186 . When all the seven segments of a display are energized, the number 8 will be shown.
187 . CMOS family of logic circuit uses field effect transistor.
188 . Read mode is there in extracting information from storage.
189 . Read and write capabilities are available in RAM.
190 . RAM is temporary memory.
191 . A/D converter changes analog voltage to binary data.
192 . D/A converter has a binary input.
193 . Out of LCD and LED, LCD consumes the least power.
194 . Astable multi-vibrator can be used as a clock timer.
195 . In the circuit shown the output will be square wave pulse.
196 . The frequency f for the circuit shown will be 14545.
197 . Frequency will decrease to the clock frequency when RB is increased.
198 . In the above circuit the output frequency will reduce when RA,RB and C1 increases.
199 . A half adder has 2 inputs and 2 outputs.
200 . MOSFET is an electrostatic device.
