1. Show possible organization and number of address pins for 256k X1 DRAM 2. Describe three differences of ROM chips versus RAM chips. 3. Assume that we have 4 bytes of hexadecimal data:27H, 62H, 3FH, and 53H(10 points) a) Find the checksum byte b) Perform the checksum operation to ensure data integrity. c) If the second byte 62H had been changed to 22H, show how the checksum detects the errors 1. Show possible organization and number of address pins for 256k X1 DRAM 2. Describe three differences of ROM chips versus RAM chips. 3. Assume that we have 4 bytes of hexadecimal data:27H, 62H, 3FH, and 53H(10 points) a) Find the checksum byte b) Perform the checksum operation to ensure data integrity. c) If the second byte 62H had been changed to 22H, show how the checksum detects the errors