System Concept
List all the processes in the information processing cycle.
Input, Process
Output, Storage
How many bits would it take to represent the following phase :
“PROGRAM MATRIKULASI”
1 byte = 8 bits
= 21 bytes x 8
= 168 bits
List three (3) types of information coding scheme.
Extended ASCII
EBCDIC
UNICODE
Name three (3) basic logic gates shown below :
NOT
AND
OR
Describe storage.
Computer holds data, information and instruction in storage for future use
What is the relation between bit and byte?
1 byte = 8 bits
or
8 bits represent a byte
Calculate the total number of bits for the given phrase using Unicode :
#followme_tofollowyou
= 21 x 16
= 336 bits
Identify two (2) combinations of different gates used in the below logic circuit :
NAND
XOR
Identify the operation involved in the information processing cycle based on the given situation
“Cropped the image using a mobile app to a desirable size.”
Process
State two (2) advantages of using decimal numbers.
Easy readable
Used by humans
Easy to manipulate
State the range of values that can be represented by EBCDIC.
0 - 255
Draw the logic symbols based on the description given below :
A gate which produces true output if either or both inputs are true. Otherwise, the output is false.
OR-Gate
“A short message is displayed on the smartphone screen to show that the assignment has been uploaded successfully via Google Classroom.”
a) Identify the operation involved in the information processing cycle based on the above situation.
b) State the other operation related directly to the answer you have given in (a).
a) Output
b) Storage
Briefly describe one (1) disadvantage of using binary numbers.
Difficult to read and write for humans because of large number of binary of an equivalent decimal number
Extended ASCII has its equivalent characters in Unicode, however, Unicode is more common nowadays.
Describe the reason that made Unicode a primary coding scheme.
Unicode is a 16-bit coding scheme that has the capacity of representing all the world’s current languages, which are 65,536 characters and symbols
Identify the logic gate based on the given description :
The output is true if either, but not both, of the inputs are true. The output is false if both inputs are false or if both inputs are true.
XOR-Gate
Siti needs pocket money and calls her father to bank in RM200 into her saving account. After her father had agreed and done the transaction, she went to the Bank Ceria Berhad to withdraw the money from the ATM machine. She received 4 pieces of RM50 notes.
Identify two (2) activities involved for process operations in the information processing cycle during the withdrawal process.
ATM machine verify ATM card
ATM machine verify PIN number
ATM machine determine transaction type
ATM machine determine account type
ATM machine determine amount to withdraw
ATM machine calculate balance
ATM machine determine the notes required
Describe why the hexadecimal notation is used in data representation instead of binary numbers.
It can represent binary values in a more compact and readable form
The conversion between the binary and the hexadecimal number system is very efficient
More human friendly which makes it easier to read, write and understand. Also, writing in less digit lower the possibility of error occurring
Coding scheme X is widely use in most of mini computes and all personal computer, while coding scheme Y is widely used in several operating systems including Windows, Mac OS and Linux.
Differentiate between coding scheme X and Y in terms of bit.
X - Using 8 bits coding which give a total of 256 types of character symbols
Y - Using 16-bits coding scheme which give a total of 65,536 types of character symbols
Draw the logic circuit based on the Boolean expression.
X = L’ . F + F’ . A
Answer :