The Impact of Computing

The Impact of computing

Energy can be reduced by:

• Turning off PC


• Lower power hardware


• Server Virtualization


• Hardware as a service


• Energy efficient coding

To be energy efficient:

• Increase business efficiency


• Enable dematerialization


• Travel reduction

- Computing saves more resources than consumes.

The Green Machine?

Process:

1.)Audit of Tech
2.)Plan



Purcahsing Strategy:

• Laptop instead of PCs


• Don't over specify


• High-efficient power supply units.

Matinence:

• Set monitor to "low power" after inactivity.


• Switch of computers.


• Replace CRT monitors with LCD.


• Extend using equipment.

Data Centres

• Highly Efficient servers
• Virtual servers if possible
• Review cooling strategies.
• Recycling

Chapter 2:Binary Numbers

• On signal is represented by 1
• Off signal is represented by 0
• Decimal-ordinary numbers become 1's and 0's when converted to binary.
• They consist of #'s 0-9 and to continue on you must ass a second column of digits 10,11,12....
• Binary uses two digits, so each column is worth twice the one before.
• Each number then is looked at as a component oef its positional values(each a power of 2)
• Binary denotes all numbers with combinations of 2 digits.
• Decimal numbers are automatically converted into binary numbers and vice versa.
• Binary number processing is completely hidden from the user.

0 0 1 1
2 10
3 11
4 100
5 101
6 110
7 111
8 1000
9 1001
10 1010
11 1100
12 1101
14 1110
15 1111

Bits and Codes

• ASCII
• The most widely used code.
• An abbreviation of American Standard Code for Information Interchange
• Unicode.
• A coding scheme that supports 65,000 unique characters.

Bits as Instructions in Programs

• Program instructions are represented in binary notation, through the use of codes.

Bits, Bytes, and Buzzwords

• Bit-related terminology
• Kilobytes(KB)= 1 thousand bytes
• Megabytes(MB)=1 million bytes
• Gigabytes(GB)=1 Billion bytes
• Terabytes(TB)=1 Trillion bytes

Green Computing

• The manufacture of hardware and software can have an impact on the environment.
• Buy green equipment(Energy Star)
• Use a notebook and a solar battery
• Use energy -saving features
• Turn off computer when our away
• Screen savers don't save anything
• Recycle waste products

Discussion 8/19/10

• Minimize=running on the background.-multi-tasking.

Science Project Project

-experiment - no experiment

1. Question
2. Hypothesis formulated
3. Relevant Data sought and gathered.
4. Hypothesis is tested and evaluated.

Reliable Conclusion= no contradiction

Critical Thinking

• Critical Thinking: correct thinking in pursuit of relevant and reliable knowledge about the world.
• A person who thinks critically:-

1. Ask appropriate questions
2. Gather relevant information efficiently and creatively
3. Reason information
4. Come to a reliable, trustworthy conclusion

• We then watched three video clips on different points of views on Multi-tasking.
• It turns out that it has been proven that there really is not such a thing as multi-tasking because our brains don't work as efficiently while doing more than one task compared to if we did one think at a time.
• I think I'll take the efficiency over the multi-tasking,. Besides I'm to good at "multi-tasking " myself. I can do it only with certain things like listening and taking notes.
  

Chapter 2: Basic Componets of Computer

• Input Devices: Keyboards,pointing devices(mouse)
• Output Devices: Display or video monitor, printer, speakers, Central Processing Unit(CPU).

Memory and Storage Devices

• Primary Storage: RAM (Random Access Memory)
• Secondary Storage: Storage devices that serve as long term repositories for data:
• Hard Disk Drives
• Recordable CD and DVD drives
• Tape Drives

Information

• Information: communication that has value because it informs . Data=Information
• Computer's information is digital.
• Bit or Binary digit
• The smallest unit of information.
• Can have one or two values:0 or 1.
• Can represent numbers,codes, or instructions.
• Byte: a collection of 8 bits.
• Bit:0,1
• Using two symbols all numbers can be represented on a calculator as well as performing arithmetic.
• A calculator translates the touch on the numeric keypad into a series of 0's and 1's.

Chapter 2 Hardware Basic: Basics of a Computer

• Receive Input: Accept information from the outside world.
• Process Information: Perform arithmetic or logical (decision-making) operations on information.
• Produce Output: Communicate information to the outside world.
• Store Information: Move and store information in memory.

Input-Process-Output=to store info.