The flow of electric charge that occurs in one direction that is typically produced by batteries is known as
a. ac current.
b. dc current.
c. ac/dc current.
d. unidirectional current.
b. dc current.
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FCA welding guns are available as water-cooled or air-cooled. The ____________________-cooled gun is more efficient at removing waste heat.
Fill in the blank(s) with the appropriate word(s).
An analog meter is often used to test computer-controlled circuits.
Answer the following statement true (T) or false (F)
What is interrupt-driven I/O and what is its major advantage?
A) An I/O device needing service sends a request to the PIC (programmable interrupt controller), which in turn notifies the CPU of the request based on the assigned priority level of the specific I/O device. If there are no pending I/O requests the CPU does not have to spend time checking the I/O ports. B) Each individual I/O device is checked sequentially on a regular basis to see if it needs to be serviced. This slows down the CPU operation. C) Individual I/O devices regularly send inquiries to the CPU to see if it is available for a specific I/O operation; if the CPU is available, the I/O device then proceeds to carry out its operation. D) Each individual I/O device is serviced sequentially on a regular basis by the PIC. This speeds up the I/O process.
Why did colonial masters first adopt the institution of indentured servitude rather than Indian or black slavery to meet their demands for labor? Why, then, did black slavery replace indentured servitude?
What will be an ideal response?