Q.24)When/why metastability will occur?
Friday 26 October 2012
Post # 260
Q.23)What is metastability? --- A.23)Metastable state: An un-known state in between the two logical known states.
Post # 259
A.22)If the source&drain also connected properly it acts as a buffer.But suppose I/P is logic 1,O/P will be degraded 1 Similarly degraded 0.
Post # 258
Q.22)All of us know how an inverter works.What happens when the PMOS and NMOS are interchanged with one another in an inverter?
Post # 257
A.21)B'coz,In Transmission Gate, PMOS and NMOS aid each other rather competing with each other.
Post # 256
Q.21)Why PMOS and NMOS are sized equally in a Transmission Gates?(you can check all the past posts at: jigarforelectronics.blogspot.in)
Post # 255
…If the sizes of PMOS&NMOS are same,then PMOS takes long time to charge up the output node,to nulify this PMOS size kept larger than NMOS.
Post # 254
... In CMOS technology, NMOS helps in pulling down the output to ground & PMOS helps in pulling up the output to Vdd.
Post # 253
A.20)In PMOS the carriers are holes whose mobility is less[aprrox half]than the electrons,the carriers in NMOS.i.e.PMOS is slower than NMOS.
Post # 252
Q.20)In CMOS technology, IN DIGITAL DESIGN, why do we design the size of pmos to be higher than the nmos?(verilog interview Que.)
Tuesday 23 October 2012
Post # 251
A.19)The main difference between latch and FF is that latches are level sensitive while FF are edge sensitive.
Post # 249
(…Contd)This is because the current in BJT is exponentially dependent on input where as in MOSFET it is square law.
Post # 244
A.16)Because it can not drive the output load straight away, so we gradually increase the size to get an optimized performance.
Post # 243
Q.16)Why do we gradually increase the size of inverters in buffer design? Why not give the output of a circuit to one large inverter?
Post # 242
To New Members: These are E_K's Interview Questionnaire Weeks...(For Final Year B.E./B.Tech) Students.
Thanks to all for Joining
Thanks to all for Joining
Post # 241
...Those value of Resistors are typical values, For specific application it can be any value.In mobile phones it's about of mega ohm range!
Sunday 21 October 2012
Post # 238
(….Contd.)particularly in TTL, any floating input is considered as Logic 1. But it’s never a good idea to leave the input pins unconnected.
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