ram rom

ROM
ROM is where all instructions are stored for computers  and it cant be deleted
You can find a computer's Read-Only Memory chip somewhere on the system's motherboard.
it is better then a hdd ssd because it cant be deleted
 RAM is quick
it is found on sticks
virtal memory is stored in a ssd or hdd

my history of computing

https://drive.google.com/open?id=0B2jpTmO-EKfqeXlBaUM2WVBmZnc&authuser=0

my python challenge 12

https://drive.google.com/open?id=0B2jpTmO-EKfqSUNrQ3NGUjNMeWs&authuser=0

 redundancy in a computer system

1. Redundancy is a system design in which a component is duplicated so if it fails there will be a backup. Redundancy has a negative connotation when the duplication is unnecessary or is simply the result of poor planning. Storage hardware.

three ways that companies ensure their systems are reliable

backups
  generates to run the computers
     testes

data types

data vs information

 data vs information

Data	Information
Meaning	Data is raw, unorganized facts that need to be processed. Data can be something simple and seemingly random and useless until it is organized.	When data is processed, organized, structured or presented in a given context so as to make it useful, it is called information.
Example	Each student's test score is one piece of data.	The average score of a class or of the entire school is information that can be derived from the given data.
Etymology	"Data" comes from a singular Latin word, datum, which originally meant "something given." Its early usage dates back to the 1600s. Over time "data" has become the plural of datum.	"Information" is an older word that dates back to the 1300s and has Old French and Middle English origins. It has always referred to "the act of informing, " usually in regard to education, instruction, or other knowledge communication.

theory computers systems fail

The Ministry of Defence (MoD) has wasted millions of pounds on a botched computer system, leaked documents have revealed.

The recruitment partnering project, a £1.3bn scheme intended to enable the army to recruit online, is almost two years behind schedule and will not be fully operational until April 2015 at the earliest, the Times said.

Up to £15.5m has been spent on the computer system but, according to the newspaper, the problems are so serious that defence secretary Philip Hammond is considering spending nearly £50m on a new solution.

link http://www.theguardian.com/uk-news/2014/jan/14/ministry-of-defence-failed-computer-system

what is dater and information

theory

explain the difference between data and information





dater:

 Data is raw, unorganized facts that need to be processed. Data can be something simple and seemingly random and useless until it is organized.

information:
When data is processed, organized, structured or presented in a given context so as to make it useful, it is called information.
source for both above :  HTTP://differentiation/difference/Data_vs_Information

data                                                                                        information 

exams

 60 %  coursework
40%   50 hours of exams