13. Mathematics and communication

Slides:

Advertisements

Similar presentations

Introduction to Computers Chapter 2 §Computers are common in every facet of human activity. §They overcome the shortcomings of conventional radiography.

Advertisements

1 Chapter 2 The Digital World. 2 Digital Data Representation.

Micro optics: Fibers and Butterflies. Total internal reflection.

 The central processing unit (CPU) interprets and executes instructions.  The “brains” of the computer.  The speed of the processor is how fast it.

Processing Data.

Units of Storage What is Storage. A look at Storage We know computers can store large amounts of data. We measure the storage capacity of different storage.

assumes basic arithmetic

Unit 3—Part A Computer Memory

Binary and Decimal Numbers

Introduction to Information Technology

IT-101 Section 001 Lecture #4 Introduction to Information Technology.

Backing Storage Devices.  We are learning to:  Make comparisons between different backing storage devices using their features.  Identify appropriate.

Representing Information in Binary (Continued)

CREATED BY, MS. JENNIFER DUKE BITS, BYTES, AND UNITS OF MEASUREMENT.

Communications Technology 2104 Mercedes Lahey. Bit 1. bit=From a shortening of the words “binary digit” 2. the basic unit of information for computers.

Communications technology Ali Kennedy.  Bit= from a shortening of the words “ bi nary digit”  The basic unit ofinformation for computers  1 or 0 are.

Computer Logic Distinction between analogue and discrete processes and quantities. Conversion of analogue quantities to digital form. Using sampling techniques.

1 Machine Architecture and Number Systems Topics Major Computer Components Bits, Bytes, and Words The Decimal Number System The Binary Number System Converting.

Computer Systems Chapter 1 Pages Hardware-physical pieces Key hardware components in a computer system: The physical parts. – Central processing.

Data Representation A series of eight bits is called a byte. A byte can be used to represent a number or a character. As you’ll see in the following table,

OBJECTIVES  Explain why a computer represents data in the form of binary  Explain the terms related to data storage: bit, byte, character, word  Calculate.

Computer Systems Nat 4/5 Computing Science Data Representation Lesson 2: Floating Point Representation.

1 3 Computing System Fundamentals 3.2 Computer Architecture.

Unit 2—Part A Computer Memory Computer Technology (S1 Obj 2-3)

How We Measure Memory. Learning Goal Today we are going to learn how the computer stores information.

Networking for Home and Small Businesses –.  Explain the binary representation of data.

Computers - The Journey Inside continues…

Advanced AV Production Practicum Math for The Audio Video Professional Calculating Audio and Video File Sizes Copyright © Texas Education Agency, 2015.

How We Measure Memory. At the Bottom of things A piece of digital information is always stored as a sequence of binary states. What’s that mean you ask???

2.1.4 Data Representation Units.

* Numeral Systems: A writing method for expressing numbers is called a “Numeral System". In the most common numeral system, we write numbers with combinations.

By Dzuryat Nugroho.  Bit ◦ The smallest size of data in computer 1 bit = 0 or 1  Character (a,b,c,d……z,1,2,3,&,%,?,/….) ◦ 1 character = 8 bit  So,…if.

Units Chapter 0.

Binary Decimal Hexadecimal

Computer Fundamental - ITD13821 Lecture 01 Extra Numbering System.

Binary Numbers. Base 10 and Base 2  We normally work with numbers in base 10.  In base 10 we use the digits 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9.  Everything.

Basic Computer Components Unit 2. What is a computer?  A computer is an electronic device that accepts raw data and processes it into information that.

© OCR 2016 Unit 2.6 Data Representation Lesson 1 ‒ Numbers.

COMMON FEATURES. WHAT IS? Processors: To control the functions of the device Microprocessors Internal memory: To store the program instructions into the.

ITEC2110, Digital Media Chapter 1 Background & Fundamentals

GCSE COMPUTER SCIENCE Topic 3 - Data 3.3 Data Storage and Compression.

Computer Information Technology – Section 1-1

Computer basics.

Section 2 Terms Autumn Buchsenschutz.

© 2003, Cisco Systems, Inc. All rights reserved.

Computer Memory Digital Literacy.

Memory Parts of a computer

Information Support and Services

Chapter 2 Understanding the Digital Domain

Introduction to networks

3 - STORAGE: DATA CAPACITY CALCULATIONS

Computer Information Technology – Section 1-1

7. Displaying and interpreting single data sets

Unit 2 Computer Memory Computer Technology (S1 Obj 2-3)

Unit 3—Part A Computer Memory

PRIMARY STORAGE.

Data Representation Numbers

How do computers work? Storage.

Unit 3—Part A Computer Memory

Bits, Bytes, and Storage.

Mobile Phone Plans Focus Study 1.

Information Representation

Introduction to Networks

Bits and Bytes Key Revision Points.

Information Technology Department

LO1 – Understand Computer Hardware

Network Speed time = size of file (in bits) / network speed (in bits).

AS Level ICT Selection and use of storage requirements, media, and devices: storage and storage capacity Unit 1 Topic a - Selection and use of storage.

GCSE COMPUTER SCIENCE Topic 3 - Data 3.8 Data Storage.

Presentation transcript:

13. Mathematics and communication Study guide 13. Mathematics and communication

Mobile phone plans The cost of making a mobile phone call is determined by the connection fee (or flagfall), call rate and the length of the call. Call charge = Connection fee + Time used × Call rate. Prepaid mobile phones require the user to purchase credit in advance. Postpaid plans involve a contract that varies in length from one to two years. It involves a range of charges such as a connection fee, monthly access fees, call costs, disconnection fee and data charges. HSC Hint – Remember to subtract the free calls from the call costs when calculating the monthly charge.

Phone usage tables and graphs A step-function or step graph consists of horizontal line segments or intervals. The end points of the line segments consist of a closed circle or an open circle. HSC Hint – The values on the vertical axis are read from the closed circle (shaded) and not the open circle.

File storage Files are used to store data in a storage device. A bit is the smallest unit of data stored in an electronic device. A byte is a group of 8 bits. To convert between file storage units use the calculator and the power of 2. Unit Symbol Meaning Exact value Power of two Byte B One byte 1 (20) Kilobyte KB Thousand bytes 1024 (210) Megabyte MB Million bytes 1 048 576 (220) Gigabyte GB Billion bytes 1 073 741 824 (230) Terabyte TB Trillion bytes 1 099 511 627 776 (240) HSC Hint – When converting to a larger unit multiply by the appropriate power of 2.

Digital downloads The speed of data transfer is measured by the number of bits per second (bps) or the bit rate. To convert data transfer rates learn the order of the prefixes. Unit Symbol Approximate value Bit per second bps 1 Kilobit per second Kbps 1000 Megabit per second Mbps 1 000 000 Gigabit per second Gbps 1 000 000 000 Terabit per second Tbps 1 000 000 000 000 HSC Hint – An increase in the order of the prefix is a conversion factor of 1000.

Digital download statistics People are downloading digital media at a great rate. Use summary statistics (mean, median, mode, range and interquartile range) to interpret the effect of downloading music and video files. HSC Hint – Mean, median and mode measure the centre of the data. Range and IQR measure the spread.