4(a) A register is basically a storage space for units of memory that are used to transfer data for immediate use by the CPU (Central Processing Unit) for data processing. Also known as memory registers, they can actually form part of the computer processor as a processor register. The register is large enough to hold any kind of data, such as dates, instruction sets, storage addresses, bits, sequences, and characters. Based on your understanding on different types of registers, explain on the given registers below: 1 Program Counter ii) Instruction Register Memory Data Register (MDR) iv) Memory Address Register (MAR) v) Condition Code Register