A) i) Describe the all pins of 82C55 programmable interface (PPI) IC. ii) Define command byte A & B of the command register in the 82C55 IC.
iii) Draw the proper circuit diagram of an 8-digit LED display interfaced to 8088
microprocessor through an 82C55 IC.

Write a program that reads a file consisting of students’ test scores in the range 0–200. it should then determine the number of students having scores in each of the following ranges: 0–24, 25–49, 50–74, 75–99, 100–124, 125–149, 150–174, and 175–200. output the score ranges and the number of students. (run your program with the following input data: 76, 89, 150, 135, 200, 76, 12, 100, 150, 28, 178, 189, 167, 200, 175, 150, 87, 99, 129, 149, 176, 200, 87, 35, 157, 189.)

In my email i got a message it says a quick message and in message details on who its from its says nicole and under nicole is [email protected] -

What are three software programs for mobile computing?