Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Explain in detail the operation of 8255 in mode1 taking suitable example.
In mode1, Ports A and B are programmed as input or output ports and Port C is used for handshaking.
8255 handshaking
PPI Interface to CPU
Port A and or port B treated as latching input devices. External data is stored into the ports till the microprocessor is ready.
Port C is utilized for control or handshaking signal that cannot for data.
Signal Definitions for Mode 1 Strobed Input.
STB‾: The strobe input loads data in port latch on a 0 to 1 transition,
IFB: Input buffer full is an output specifying that input latch has information.
INTR: Interrupt requests outputs which request an interrupt.
INTE: Interrupt enable signal is neither output nor an input; this is an internal bit programmed through the PC4 that is port A to PC2 that is port B bits.
PC7, PC6: The port C pins 7 and 6 both are general purpose I/O pins which are available for any reasons.
Saturation and Cutoff in bipolar junction transistor: Saturation : With both of the junctions forward-biased, a BJT is in saturation mode and makes easy high current condu
GIS Applications in Management of Power Distribution Systems: a.) Inventory of existing network. b.) Easy access to network details. c.) Easy access
The magnetic field can be supplied by coils supplied from the output of the generator itself. This is known as self-excitation.There are three ways that the field coils can be conn
block diagram .
What is Threaded system. Threaded system: At times we require implementing an operating system which can process multiple threads. Many threads are handled through the kernel
what is equalizer ring
Summation Meters Summation meters are other special categories of meters that are used for recording the total consumption of a consumer fed at more than one point. The major
The variable resistor Z o in the circuit shown in Fig. 1 is adjusted until maximum average power is delivered to Zo. a) Find the value of Z o b) Calculate the maximum av
Guarding Against Loss in Transformers Distribution transformers are expected to convert up to 95-98% of the input power into usable output power. A distribution transformers i
Q. Effect of feedback on sensitivity to parameter changes? A good control system, in general, should be rather insensitive to parameter variations, while it is still able to fo
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd