Section 2: Embedded Systems

Question 1

Define microprocessor

Answer 1

Consists of a processor only. Has no main memory and no I/O devices. Generally refers to a general-purpose Central Processing Unit (CPU)

Question 2

Define microcontroller

Answer 2

A complete computer including a processor, memory, and some I/O devices. Small and cost effective, built-in memory, specialized built-in interface support.

Question 3

Define system-on-a-chip (SoC)

Answer 3

A complete fully-functional system is implemented on a single integrated circuit. Includes processing, memory, I/O, as well as any other digital logic.

Question 4

Define programmable logic device

Answer 4

A digital logic IC that permits configurable and interconnection of internal logic blocks. A computer chip that can be “rewired” to implement a custom digital circuit using primitive blocks. Examples: SRAM, EEPROM. Can be one time configurable or reconfigurable.

Question 5

Define system-on-a-programmable-chip (SoPC)

Answer 5

A SoC implemented using a high-density, reconfigurable PLD. Pro: flexible, upgradable. Con: potentially slower, more expensive in large quantities.

Question 6

Define hardware

Answer 6

The mechanical or electronic components of a computer.

Question 7

Define software

Answer 7

The programs or other operating info used by a computer.

Question 8

Define embedded system

Answer 8

A special-purpose computer system designed to perform a task without the user’s knowledge of its existence. Examples: TV’s, washers, transmissions, cellphones.