AS computing 2011 July Batch

[Ravichandran]

Dear all,

            Welcome to AS computing class. I am Dr.Ravi your facilitator for this course. This course consists of two modules, theory and practicals. In theory we will have 12 chapters and in practicals we do have programming classes. You will sit for theory and practical exams at the end of the course, which is conducted by CIE.

All the best, keep moving, for there is always a helping hand above you to guide you.

Dr.Ravi

 

[Ravichandran]

PowerPoint for Application software, how data is transferred from secondary storage to primary storage and hardware. Please download and use this powerpoint.

Dr.Ravi

[Dain Razali]

So generally, today we learned about Data Structures such as different types of fields (eg. text, numeric, date, Boolean etc.) and that many fields joined together make up a record (eg. Raj's record & Faiz's record) and a collection of records is called a file/database. A text-field is mainly a field where letters are used to fill it up( alpha-numerics are also categorised under a text-field). A date field has a specific way of filling it up, usually using numbers ( eg. dd/mm/yy, mm/dd/yy, dd/mm/yyyy etc.). A Boolean field is a field where there are only 2 choices to pick from (eg. the gender of somebody- M or F). Numeric-fields, such as the name suggests are fields that can be filled only with numbers.  

Dr. Ravi elaborated on numeric-fields and we  learned about binary arithmetics (known as binary numbers in our math classes in high school) and how the computer uses this to send and receive information in the form of 8-bit ASCII(American Standard Code for Information Interchange) code. For example. a=65 and therefore it's 8-bit ACSII code is 01000001. We also learned that A=97 and is easily remembered as the 'number for a capital letter= number for small letter+32'. Besides that, Dr. Ravi also mentioned that 1byte=8bits and 1/2byte=1nibble. And lastly, we played the 'binary game' which was pretty interesting. I hope i've gotten everything right so far and if i havn't or have missed certain important facts, i would really appreciate it if u guys correct me. Thanks :)

[3pi2mqtqk0utu]

w00t nice job...btw does any of you know what is mean by string data type?..

Dain Razali said:

So generally, today we learned about Data Structures such as different types of fields (eg. text, numeric, date, Boolean etc.) and that many fields joined together make up a record (eg. Raj's record & Faiz's record) and a collection of records is called a file/database. A text-field is mainly a field where letters are used to fill it up( alpha-numerics are also categorised under a text-field). A date field has a specific way of filling it up, usually using numbers ( eg. dd/mm/yy, mm/dd/yy, dd/mm/yyyy etc.). A Boolean field is a field where there are only 2 choices to pick from (eg. the gender of somebody- M or F). Numeric-fields, such as the name suggests are fields that can be filled only with numbers.  

Dr. Ravi elaborated on numeric-fields and we  learned about binary arithmetics (known as binary numbers in our math classes in high school) and how the computer uses this to send and receive information in the form of 8-bit ASCII(American Standard Code for Information Interchange) code. For example. a=65 and therefore it's 8-bit ACSII code is 01000001. We also learned that A=97 and is easily remembered as the 'number for a capital letter= number for small letter+32'. Besides that, Dr. Ravi also mentioned that 1byte=8bits and 1/2byte=1nibble. And lastly, we played the 'binary game' which was pretty interesting. I hope i've gotten everything right so far and if i havn't or have missed certain important facts, i would really appreciate it if u guys correct me. Thanks :)

[Afifah Ahmad]

hmm wat we learned yesterday was about utility programs, software, buffer, RAM, ROM (if i 4get 2 add anything pliz add it up ok)

utility programs 

-extra routines that are added to the operating system

-system programs are counted as utility

 

application software

-designed for specific tasks

-application packages = designed for specific tasks with user manual included

-tailor-made software = designed for specific users

-general purpose packages = for general purposes

 

integrated software

-consists of several parts and data can be shared between the application package

e.g. in microsoft office, when we use word, we can share the datas there into excel & powerpoint, but we cannot share the datas with adobe or notepad

 

SOMEONE UPDATE ABOUT BUFFER, ROM and RAM ok? 

 

muhammad amir asyraf said:

w00t nice job...btw does any of you know what is mean by string data type?..

Dain Razali said:

So generally, today we learned about Data Structures such as different types of fields (eg. text, numeric, date, Boolean etc.) and that many fields joined together make up a record (eg. Raj's record & Faiz's record) and a collection of records is called a file/database. A text-field is mainly a field where letters are used to fill it up( alpha-numerics are also categorised under a text-field). A date field has a specific way of filling it up, usually using numbers ( eg. dd/mm/yy, mm/dd/yy, dd/mm/yyyy etc.). A Boolean field is a field where there are only 2 choices to pick from (eg. the gender of somebody- M or F). Numeric-fields, such as the name suggests are fields that can be filled only with numbers.  

Dr. Ravi elaborated on numeric-fields and we  learned about binary arithmetics (known as binary numbers in our math classes in high school) and how the computer uses this to send and receive information in the form of 8-bit ASCII(American Standard Code for Information Interchange) code. For example. a=65 and therefore it's 8-bit ACSII code is 01000001. We also learned that A=97 and is easily remembered as the 'number for a capital letter= number for small letter+32'. Besides that, Dr. Ravi also mentioned that 1byte=8bits and 1/2byte=1nibble. And lastly, we played the 'binary game' which was pretty interesting. I hope i've gotten everything right so far and if i havn't or have missed certain important facts, i would really appreciate it if u guys correct me. Thanks :)

[3uxiax8uu3t9h]

Computer block diagram
Five Major unit
 1) Input
 2) Output
 3) Arithmetic Logic Unit (ALU)
 4) Control Unit
 5) memory Unit

[Afifah Ahmad]

what's a system software? i think my notes on software are not complete

[0bptstdyzz21j]

Aysraf, I know the advantages of intergrated software that is easier, easy moving and cheaper. What is the disadvantages of intergrated software?

 

[3uxiax8uu3t9h]

On my opinion, System software refers to the files and programs that make up your computer's operating system. What about others ?

Afifah Ahmad said:

what's a system software? i think my notes on software are not complete

[Afifah Ahmad]

ALU is in other words processor is it? what is the full name for ALU asyraf?
Asyraf Naim bin Jamal Shahid said:

Computer block diagram
Five Major unit
 1) Input
 2) Output
 3) Arithmetic Logic Unit (ALU)
 4) Control Unit
 5) memory Unit

[3uxiax8uu3t9h]

We have learned that record is the collection of files. can anyone give me examples of a FILE ?

[3pi2mqtqk0utu]

ALU is short for arithmetic/logic unit

[Afifah Ahmad]

im not sure about this, but i guess the datas cannot be shared with other application software

Raj Kumaran Kalidas said:

Aysraf, I know the advantages of intergrated software that is easier, easy moving and cheaper. What is the disadvantages of intergrated software?