Vacuum tubes are used in the In a 4-way set associative there are totally 128 sets. How many bits in the main memory address are used as the set field? Main memory is divided into blocks where each block has 16 words. What is the block number of memory address 2B1D? Convert decimal -7.125 to binary and represent it using 8 bits for the mantissa and 4 bits for the exponent. Match the following: DMA I/O ALU Cache Printer Interrupt-driven I/O High speed RAM Condition Code Register Disk