Final answer:
To calculate data transfer rate from main memory to CPU, multiply the number of lines on the bus by the clock speed and convert to bytes. With a 32-line connection and 1200 MHz clock speed, 4,800,000,000 bytes or 4,800 MB can be transferred per second.
Step-by-step explanation:
The question is about calculating the data transfer rate from the main memory to the CPU. With 32 lines on the connection between the CPU and main memory and a clock speed of 1200 MHz, the amount of data that can be transferred per second can be found with a simple calculation.
Each line can transfer 1 bit per clock cycle; thus, with 32 lines, you can transfer 32 bits per cycle. Since 1 byte is equal to 8 bits, this connection can transfer 32 / 8 = 4 bytes per cycle. The clock speed is 1200 MHz, equal to 1,200,000,000 cycles per second. Therefore, the amount of data in bytes transferred per second is 4 bytes/cycle * 1,200,000,000 cycles/second = 4,800,000,000 bytes/second.
When discussing memory capacity, a megabyte (MB) is considered as the unit for one million bytes. Hence, 4,800,000,000 bytes/sec is equivalent to 4,800 MB/s, as there are 1,000,000 bytes in a MB.