Java 6 Illuminated: An Active Learning Approach, 2nd Edition

1.1 Basic Computer Concepts 7

TABLE 1.2 A Comparison of Memory Types

Device Location Type Speed Capacity (MB) Cost/KB

L1 cache On-chip SRAM Very fast Very small Very high

L2 cache Off-chip SRAM Fast Small High

Memory Off-chip DRAM Moderate Moderate Moderate

Hard disk Separate Disk media Slow Large Small

4, 8, or 16 cells. For instance, a 32-Kbit RAM chip organized as 8K  4 is

composed of exactly 2

13

, or 8,192 units, each unit containing four cells.

This RAM chip will have four data output pins (or lines) and 13 access pins

(or lines), enabling access to all 8,192 cells because each access pin can have

a value of 0 or 1. Table 1.2 compares the featur