Question
Download Solution PDFHow many 16K × 1 RAM chips are needed to provide a memory capacity of 128 K-bytes ?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is option 4: 64
Key Points
- Each 16K × 1 RAM chip stores 16K bits, which is equal to 214 bits.
- To convert to bytes: 16K bits ÷ 8 = 2K bytes per chip.
- Required memory = 128K bytes
- Number of 2K-byte chips needed = 128K ÷ 2K = 64 chips
- However, each chip is 1-bit wide (16K × 1). To make 1 byte (8 bits), we need 8 chips for each row of addressable memory.
- So, total number of chips = 64 × 8 = 512 chips
Wait — the question asks about memory **capacity** of 128K-bytes using 16K × 1 chips.
- Each chip provides: 16K × 1 = 16K bits = 2K bytes
- To get 128K bytes: 128K ÷ 2K = 64 such chips
Therefore, the correct answer is: option 4: 64
Last updated on Jul 3, 2025
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