Fill in the missing step in the following deadlock situation. Two users from the local board of education are each running a program (P1 and P2), and both programs will eventually need two DVD drives to copy files from one disc to another. Only two DVD-R drives are available and they're allocated on an "as requested" basis. Soon the following sequence transpires:1. P1 requests drive 1 and gets it.2. ____3. P1 requests drive 2 but is blocked.4. P2 requests drive 1 but is blocked.
A. P1 requests drive 2.
B. P2 requests drive 2 and gets it.
C. P2 requests drive 1 but is blocked.
D. P1 releases drive 1.
Answer: B
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The circuit below consists of four JK flip?flops. Inputs J and K are not shown because it is assumed that they are both permanently connected to a logical 1. These JK flip?flops are positive edge triggered (i.e., they change state on the rising edge of the clock). Note that these flip?flops have a CLR (clear) input that sets Q to 1 when CLR = 1. What does this circuit do?
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What will be an ideal response?
Answer the following statements true (T) or false (F)
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The ____________________ is used to saturate or desaturate an object.
Fill in the blank(s) with the appropriate word(s).