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Flashcards in 1. Computer Systyms Deck (26)
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1

The number of measurements per second in digital technology

Sampling rate

2

When analog information is converted to a digital format by breaking it into pieces, we say it has been

Digitized

3

A single binary digit is called a

But

4

The ____ of a number system tells us he many digits we have to work with and what is the place value of each digit in a number

Base value

5

Why do modern computers use binary numbers

The devices that store and move information are less expensive and more reliable if they have to represent only one of two possible values

6

N bits can represent how many unique items?

2^N

7

Ultimately, representing information on a computer boils down to what two things

The number of items and now those items are mapped to binary values

8

Main memory is made up of a series of small, connected _____ ______

Memory locations

9

Each memory location has a unique number called an ________\

Address

10

When data is stored in a memory location, what does it do to any information that was stored at that location?

It overwrites and destroys it

11

This is the total number of bytes a device can hold

Storage capacity

12

How does a large main memory allow large programs, or several programs, to run?

They don't have to get information from secondary memory as often

13

Main memory is usually _______, meaning that the information stored in it will be lost if it's electric power supply is turned off

Volatile

14

Secondary memory decided are usually ______, meaning the information is saved even if the power supply is turned off

Nonvolatile

15

What is the cache used for

It is used by the CPU to reduce the average access time to instructions and data

16

A hard disk is a ___ ___ ___ since the read/write head can move, in general, directly to the information needed

Direct access device

17

RAM

Random access memory; main memory; read-write memory: data can be both written to it and read from it

18

ROM

Read only memory
Information that cannot be changed; often used to provide instructions needed when the computer is initially turned on

19

The Java program language allows software to be easily _____ and _____ via the web

Exchanged; executed

20

6 steps of problem solving

1. Understand the problem
2. Breaking the problem into manageable pieces
3. Designing a solution
4. Considering alternatives to the solution and refining the solution
5. Implementing the solution
6. Testing the solution and fixing any problems

21

What is the purpose of writing a program?

To solve a problem

22

A _________ defines a set of rules that determine exactly how a programmer can combine the words and symbols of the language into programming statements

Programming language

23

The instructions that are carried out when the program is executed

Programming statements

24

A group of programming statements that are given a name

Method

25

What are the two techniques used to store and manage information?

Analog and digital

26

Four groups of programming languages

Machine
Assembly
High level
Fourth generation