CHAPTER 1 INTRO TO COMP HARDWARE Flashcards
What is a Computer?
an electronic machine that can receive, process or store data according to a set of instructions (computer program) and output information.
input(data) > ???? > output(information)
Process
8 bits equals to?
1 byte
Most popular coding scheme?
a. American Standard Code for Information Interchange (ASCII)
b. Extended Binary Code Decimal Interchange Code (EBCDIC)
c. UniCode
Categories of Computers : ?
a. Personal Computer
b. Mobile Computer
c. Embedded Computer
d. Server
e. Main Frames
f. Super Computer
Computer Hardware Components : ?
a. system unit
b. memory and storage devices
c. input devices
d. output devices
e. network devices
What is a System Unit?
contains all the electrical components that the computer uses to process data.
What does a Processor(CPU) do?
interprets and manages most of the computer’s operation.
What are the roles of CPU?
a. Direct and coordinate all computer operations (conducted by control unit)
b. perform arithmetic and logical operations (comparison) on data (conducted by arithmetic and logic unit).
What is a Memory?
an internal storage unit that stores :
a. Operating system and other system software of the computer and its devices
b. Application programs with tasks
c. Data being processed by programs and its results.
What is Writing in Memory?
process of saving data, instructions or information from memory to storage medium.
What is Reading in Memory?
process to recall data from a storage medium to memory.
storage unit > ? > memory
Application Program
What is Computer Memory?
an ordered sequence of storage locations or memory cells, each of which has a unique memory address.
What is Memory Cell?
an individual storage location in memory.
