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Consider a system that employs a preemptive real-time OS. There are multiple threads that need to update a shared LCD display. Consider this example with two foreground threads (thread1 thread2) and one background thread (isr) that all output to a three-line LCD. Free is a global variable, initialized to 1.
The first parameter of Display is the line number, and the second parameter is a 16-bit number. You may call the two LCD_GoTo LCD_OutDec functions without writing them. Your Display function will effectively perform the following (this program has a critical section).
Rewrite this Display function to remove the critical sections. You CANNOT disable interrupts at all. You should not introduce new critical sections. You CANNOT allow threads to block or spin. If the LCD is busy, then the output is simply skipped. You may not change the thread code or the Display function prototype. Basically you will add software to this existing Display function, but not thread1, thread2, or isr.
The outer surfaces are exposed to ambient air, with T8,2 = 25°C and h z = 4 W/m2 · K. while hot oil flowing through the hole is characterized by Tx.1 = 300°C and h1 = 50 W/m2 · K. Determine the corresponding heat rate and surface temperatures.
draw schematics of a heat engine and b refrigeration devices. label the reservoirs the type of energy transfer and the
a system that operates in a reversible cycle receives energy by heat transfer from a 24.8oc reservoir at a rate of 25.5
a system consists of 2kg of co2 gas initially at state 1 where p11 bar and t1300k. the system undergoes a power cycle
you must explicitly state your research questions and summarise your proposal and rationale. Your introduction must contain the following information: a brief outline of the topic being addressed in this work.
You are working as a flight-test engineer at the Dryden Flight Research Center. During the low-speed phase of the test program for the X-37, you know that the plane is flying at an altitude of 8 km. The pressure at gage 1 is 1550 N/m2, gage; the pres..
water is flowing turbulently at a mean velocity of um10 fts in a 1.0 - in. i.d. horizontal pipe and the fanning
write a function that accepts an array a as input and searches the contents of the array for elements in three
How does the gross estate differ from a probate estate What determines whether an item passes to heirs outside the probate process? Are there items subject to estate tax that are not subject to income tax? Why or why not? Is a probate estate subje..
a rectangular boat the horizontal sides are l each the depth is h l2 is made of a think weightless walls and partially
Is it possible to rotate turbine blades without any fluid means there is no requirement of water or air to rotate turbine blade.
h2o as saturated liquidvapor mixture enters a counterflow heat exchanger operating at steady state at 0.7 bar with a
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