why we need external pull up for port 0 of micro-controller 8051?

2 Answers  

---

What are the control strategies of chopper?

0 Answers  

---

WHAT IS ELECTRONICS?

4 Answers   Havells, Infosys,

---

What is CMRR? Explain briefly.

39 Answers   ABC, Honeywell, NTPC, Wipro,

---

What do you mean by 3 dB cutoff frequency? Why is it 3 dB, not 1 dB?

16 Answers   College School Exams Tests, Infosys, Persistent, TCS, Wipro,

---

What is the need of filtering ideal response of filters and actual response of filters? What is sampling theorem? What is impulse response?

0 Answers  

---

Why the input impedance of OP-Amp is so high?

1 Answers   TCS,

---

What is single input output interface? How it is different from single ended interface?

0 Answers  

---

which exam date in wbsedcl in 2009

4 Answers   HAL, wbsedcl,

---

Hi.. Me going to tke test for management trainee(technical) Post I am an E&C student . Can u guide how to prepare for this test.Can u send me test paper pattern..?

0 Answers   Vizag Steel,

---

If we have 450 mm height boiler drum level, so what is span & zero value for a dpt transmitter?

0 Answers  

---

hi friends.any one tell me pattern for mt exam for steel plant..plz plz plz..

0 Answers  

---