1. Computer Systyms Flashcards

1
Q

The number of measurements per second in digital technology

A

Sampling rate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

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

A

Digitized

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

A single binary digit is called a

A

But

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

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

A

Base value

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Why do modern computers use binary numbers

A

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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

N bits can represent how many unique items?

A

2^N

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

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

A

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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

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

A

Memory locations

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Each memory location has a unique number called an ________\

A

Address

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

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

A

It overwrites and destroys it

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

This is the total number of bytes a device can hold

A

Storage capacity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

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

A

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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

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

A

Volatile

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

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

A

Nonvolatile

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is the cache used for

A

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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

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

A

Direct access device

17
Q

RAM

A

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

18
Q

ROM

A

Read only memory

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

19
Q

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

A

Exchanged; executed

20
Q

6 steps of problem solving

A
  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
Q

What is the purpose of writing a program?

A

To solve a problem

22
Q

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

A

Programming language

23
Q

The instructions that are carried out when the program is executed

A

Programming statements

24
Q

A group of programming statements that are given a name

A

Method

25
Q

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

A

Analog and digital

26
Q

Four groups of programming languages

A

Machine
Assembly
High level
Fourth generation