Name the modes of 8255 programmable peripheral interface, Computer Engineering

Assignment Help:

What are the different modes in that 8255 Programmable Peripheral Interface (PPI) can operate?

24 I/O lines in 3-8-bit port groups - A, B, C
A, B can be 8-bit input or output ports
C can serve as 2-4-bit input or output ports
3 modes of operation:

- Mode 0: A, B, C simple input or output level sensitive ports

- Mode 1: A, B input or output ports with strobe control in C

- Mode 2: A is bidirectional with control/handshake in B and C

Related Discussions:- Name the modes of 8255 programmable peripheral interface

Difference among the static rams and dynamic ram, Difference among the Stat...

Difference among the Static rams and dynamic rams. Static RAM: It is costly as each bit of memory will take around 6 CMOS transistors. More speedy as transistors are us

Discuss the customer-to-customer transactions, Discuss the customer-to-cust...

Discuss the customer-to-customer transactions. C2C (customer-to-customer): Person-to-person transactions are the oldest type of e-business. They have been there since the

What are two verification points for use with web sites, 1. Use the Web Sit...

1. Use the Web Site Scan verification point to check the content of your Web site with each revision and make sure that changes have not resulted in defects. 2. Use the Web Sit

Classification of systems, Classification of Systems Systems may be cat...

Classification of Systems Systems may be categorized as follows: a) Formal or Informal b) Abstract or Physical c) Closed or Open d) Automated orManual.

Find the magnetic declination, Question Use the National Geophysical Da...

Question Use the National Geophysical Data Center software tool to find the magnetic declination. The link to the web site is in Useful Links on the course Blackboard home page

What are tri-state devices , why they are essential in a bus oriented syste...

why they are essential in a bus oriented system? Ans) In a multiplexed bus system, many devices are linked to a common bus. If 2 or more devices attempt to use the bus at the si

Password guessing resistant protocol, flow chart

flow chart

Explain the working principle of hard disk, Question : a) Hard disk is ...

Question : a) Hard disk is an important component of a computer. What type of memory is it? b) With the help of a diagram describe its features. c) Explain its working pr

Illustrate shift micro-operations, Q. Illustrate Shift Micro-operations? ...

Q. Illustrate Shift Micro-operations? Shift is a valuable operation that can be used for serial transfer of data. These operations can also be used along with other (arithmetic

What is a privileged instruction, What is a privileged instruction? To ...

What is a privileged instruction? To protect the operating system of a computer from being corrupted by user programs, particular instructions can be executed only whereas the

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages