CompTIA® A+ Exam Prep (Exams A+ Essentials, 220-602, 220-603, 220-604)

Chapter 4. Random Access Memory (RAM)

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Terms you’ll need to understand:

• DRAM

• SRAM

• SDRAM

• DDR / DDR2 RAM

• RAMBUS

• Parity checking

• Error Correcting Code

• DIMM

• Refresh

• RIMM

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Exam objectives you’ll learn in this chapter:

Essentials 1.1—Identify the fundamental principles of using personal computers.

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Identify the names, purposes, and characteristics of memory.

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Types of memory (for instance, DRAM, SRAM, SDRAM, DDR / DDR2, RAMBUS).

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Operational characteristics.

• Memory chips (8, 16, 32)

• Parity versus nonparity

• ECC versus non-ECC

• Single-sided versus double-sided

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Introduction	163
SRAM and DRAM	163
SRAM Types ...