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List the operation modes of 8255
a) I.O Mode
i. Mode 0-Simple Input/Output.
ii. Mode 1-Strobed Input/Output (Handshake mode)
iii. Mode 2-Strobed bidirectional mode
b) Bit Set/Reset Mode.
What is expanded memory system? EMS: The area at location C8000H-DFFFFFH is frequently open or free. Such area is used for the expanded memory system into a XT or PC system, or
Q. Discuss the disadvantages of an RC coupled amplifier? RC coupled amplifiers have a few disadvantages. The resistors use dc power and so the amplifier has low efficiency. The
It has been known for a thousand years or more (originating in China) that certain (magnetic) materials would always orientate themselves in a particular direction if suspended
Factors of Contributing to Losses in Service Cables 1. Tapping of underground service cables: The service cables must be visible so that tapping of cables can be detected. U
Q. What do you mean by communication channel? The communication channel (transmissionmedium) is the physicalmediumthat is utilized to send the signal from the transmitter to th
Consider the network shown in Figure containing a voltage-controlled source producing the controlled current i c = gv, where g is a constant with units of conductance, and the con
Q. Purpose of Customer Review in project management? The Customer in conjunction with the Project Manager/ Engineer decides the timing of the IFA review. This review is cond
What is Key bouncing? Mechanical switches are used as keys in lots of the keyboards. When a key is pressed the contact bounce back and forth and settle down only after a littl
A dc machine, operating as a generator, develops 400 V at its armature terminals, corresponding to a field current of 4 A, when the rotor is driven at 1200 r/min and the armature c
find the net value of power if an average value of energy is assumed to be $0.05/KWh, the capacity value is $30/kw-yr ...
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