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Real-time systems often require precise timing for data sampling and control operations. This is usually achieved through the use of a programmable timer circuit that periodically interrupts the main processor at precise times. Two seven-segment display digits will be used to display the time in seconds and tenths of a second (roll over from 9.9 to 0.0 and continue). The stopwatch is to be controlled with two switches:
Switch 1) start/stop timing Switch 2) clear the display to 0
A loop in the main program is to continuously test these switches to determine when to start the timer, stop the timer, and reset (clear) the display. Whenever the stopwatch is running, the timer service routine should update the display every 0.1 second. When the stopwatch is stopped, the display should freeze at the last time value. If the clear switch is activated while the stopwatch is stopped, the display should reset to 0.0. The clear switch should have no effect when the stopwatch is running. When the stopwatch is restarted, the time should continue from the displayed value. Design the complete system using 8086 and peripherals.
Create cut-over plan for alternate processing site based on given below. Consider LAN for small 100-person business, Pixel Inc. Business occupies one floor in an office building.
Find out by means of truth table validity of DeMorgan's theorem for three variables: (ABC)' = A' + B' + C'. Simplify given expressions by using Boolean algebra.
Suppose a computer using direct mapped cache has 2^32 words of main memory and a cache of 1024 blocks, where each cache block contains 32 words. How many block of main memory are there?
How has the configuration for connecting input/output (I/O) devices to computers on the motherboard changed since the late 1980s?
Whch of the following is an example of a multiple-level total? A total shown at the end of report for number of books in a library or Total shown every time the type of book changes (for example, reference, fiction, nonfiction).
Write an excel nested if statement that will Use the value in cell A1 to determine which 2 cell values in column c that it falls between and enter the lower amount.
Given a function f(x) as follows: f(0) = 2, f(1) = 3, f(2) = 5, f(3) = 4. Calculate the Fourier Transform of f(x), i.e: F(0), F(1), F(2) and F(3)!
Make a list of at least 10 confidentiality, integrity, and availability requirements which should be met for transaction to be secure.
Describe in scholarly detail the kinds of PC applications skills which important for working within a major organization? Also put yourself in the shoes of a manager and share your thoughts.
W has derivation of m steps, show that w has a parse tree n+m nodes.
Windows XP Professional can interface through the operating system with an Uninterruptible Power Supply (UPS).
You can write your program to next the loops in either direction, that is, process row by row or column by column. Explain which way you would choose to process the data. What is the advantage?
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