IV. Fill in the prepositions: (вставьте нужные предлоги) 1. Memory can store instructions, programs, data the computer. 2. Main memory is usually chips or a circuit board the other two components of the CPU. 3. RAM random access memory is the storage area controlled the computer’s CPU. 4. Memory so called because its contents are replaced, when instructions are added or when electrical power is shut . 5. ROM holds instructions that can be read, but no written .