- •Introduction
- •Introduction
- •Introduction
- •Introduction
- •Introduction
- •Input devices
- •Input Peripheral Output
- •Introduction
- •Improvement Reason
- •Introduction
- •Type them using a keyboard
- •Date passwd Is
- •36 Unit 6 Operating Systems
- •Introduction
- •Introduction
- •Instructions/complex instructions
- •46 Unit 8 Applications Programs
- •1 A museum
- •2 Publishers of a subscription-only magazine
- •54 Unit 10 Computing Support Officer
- •Introduction
- •Introduction
- •Introduction
- •Introduction
- •Introduction
- •Introduction
- •Introduction
- •Introduction
- •Introduction
- •98 Unit 20 The ex-hacker
- •Introduction
- •In Computing
- •Introduction
- •108 Unit 22 People in Computing
- •Introduction
- •Introduction
- •Introduction
- •Interview: Former Student
- •I How up to date did you feel the course was?
- •I That question really relates to my next one. Is there anything that you would add to or take away from the course?
- •Very bottom. You see that little status
- •Is that right? с Yes.
- •Interview: Webpage Creator
- •In touch if there's any further
- •Interview: The ex-hacker
- •Interviewer Ralph was one of two 18-year-olds arrested in the 1990s for hacking into a large American
- •I So you're sitting in front of your computer...Somewhere, how do you set about getting into someone else's system?
- •I How can you avoid being hacked into?
- •I Did you feel terribly excited?
- •I How did they track you down?
- •I Now you're helping companies to avoid people like you.
- •I Do you hackers know each other? Is there a competitive element to all this? Is there a kind of rivalry?
- •I Movies sometimes feature hackers.
- •I a recent survey found that four out of ten uk consumers are reluctant to use credit cards for Internet purchases. How risky is it really?
- •5 Keen reader
- •Information Technology
-
Type them using a keyboard
-
Date passwd Is
logout
3 date displays date and time
passwd allows user to change password Is lists files on screen
logout closes user's account
4 The user's account will close.
READING
2 Give the class a few minutes to try this individually; then check the answers in plenary.
Key 2
a user с operating system
b applications programs d hardware
3 Discuss the meaning of the title; then give the class time to note their predictions for the remaining questions. Allow a fairly tight margin for Ss to read the text to check their answers. Deal with any disagreement on the answers which may arise by referring Ss to the relevant parts of the text.
КеуЗ
-
Applications software does not communicate directly with the computer hardware.
-
It controls the entire operating system and loads into memory other operating system programs as needed.
-
Programs which remain in memory are resident Programs which are loaded in from disk storage as required are non-resident
-
(1) manage the computer's resources
-
establish a user interface
-
execute and provide services for applications software
4 A summary can be a useful check on the understanding of a text. Advanced Ss can be asked to write their own but for most Ss at this level a gapped summary is a sufficient challenge. Set this as an individual task. Take the opportunity to revise any of these terms for linking ideas which may be unfamiliar to your class.
Key 4
The user is aware of the effects of different applications programs but operating systems are invisible to most users.They lie between applications programs, such as word processing, and the hardware.The supervisor program is the most important. It remains in memory, therefore it is referred to as resident. Others are called nonresident because they are loaded into memory only when needed. Operating systems manage the computer's resources, such as the central processing unit./n addition, they establish a user interface, and execute and provide services for applications software. Although input and output operations are invoked by applications programs, they are carried out by the operating system.
LANGUAGE WORK
-ing form (1) as a noun; after prepositions
This is the first of two Language work sections which focus on the -ing form. The other is Unit 9. The emphasis here is on the чпд form in subject position and after a preposition.
Start by eliciting the functions of an operating system. The answers are all in the text. Write the functions on the board:
-
manage the computer's resources
-
establish a user interface
-
execute applications software
-
provide services for applications software.
Then show how the -ing form can be used as the subject of sentences such as:
1 Managing the computer's resources is an important function of the operating system.