

Computer Hardware - Engineering
Q1: How many DMA channels are there in an AT class PC?A 3
B 4
C 7
D 8
E
None of the above
ANS:D - 8 Today, an AT-class system is any computer with a 16-bit, 32-bit, or 64-bit system. Earlier computers (8-bit) were known as PC/XT-class systems. All new computers used today are considered AT-class computers and you're not likely to encounter earlier computers. |


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