InYong Kalisod

Write a simple program of your choice using While or Do while statement/s. Make sure to run the program before 5 p.m. Failed to do that means you need to take your removal exam. If in case you run your program correctly write your source code at the one whole sheet of paper and submit it to me.

HAPPY NEW YEAR

Click the picture to view your activity....

Good luck...

PCO Afternoon

Good Luck!!!

FOR PCO FIRST YEAR

Good afternoon class...

What you gonna do is to solve the given problem below...

A. Convert Hexadecimal to Binary Nos.

1. AAFEDF9090


2. EEBCA232


3. ABCDEF234


4. BCAEF9856


5. FFFEEDEF234



B. Convert Binary to Hexadecimal Nos.


1. 1111100001000100


2. 111100000101101


3. 1111111111111000101


4. 10101010101010


5. 10111100011100



C. Convert binary to decimal Nos.


1. 111100001


2. 1001001


3. 01001001


4. 1001111


5. 111111100


D. Convert Decimal to Binary Nos.


1. 1000000


2. 1200


3. 620


4. 3500


5. 36000



E. Addition of Octal Nos.

1. 7777234 + 1234456


2. 3456765 + 5667775


3. 67676545672 + 77777654323


4. 1234567453 + 3456765545



F. Subtraction of Octal Nos.


1. 7654676553 - 376377664



2. 100000067 - 32345677



3. 765432547-176555667


4. 657356423657-327666633777


Good Luck!!!!

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IT O1 Students

Hi, good afternoon , kindly answer the following questions below.

A.

1. What is a folder?
2. How will you:
a. rename a folder
b. delete a folder
c. save data in a folder
3. What are the settings that you can change if you right click the desktop and click properties?
4. How will you correctly turn on and off the computer?
5. How will you check if the hard drive can handle and save data or not?
6. What is bit?
7. Compare and contrast byte from bit?
8. What are the four major number system? Describe them?
9. What is word?
10. How many bytes in 32 bits?

B. Convert the following: (Bytes and Bits)

Item Byte Bits
1. Computer
2. Information
3. Technology
4. Programming
5. IT Pro
6. CTech
7. PCO
8. Instructions
9. System
10. Lap Top

C. Compute the following:

a. Addittion

1 0 1 0 1 0 1 1
1 0 1 1 1 1 0 0


1 1 1 0 1 0 1 1
1 1 1 1 1 1 0 0


1 1 1 0 1 1 1 1
1 0 1 1 1 1 0 1


1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1


b. Subtraction

1 0 1 0 1 0 1 1
0 0 1 1 1 1 0 0


1 0 1 0 1 0 1 0
0 0 1 1 1 1 0 1


1 1 1 0 1 1 1 1
0 0 1 1 1 1 0 1


1 0 0 0 0 0 0 0
0 0 0 1 1 1 1 1


Note: Opening your notes is highly recommended if and only if you want a Zero score.

Gud afternoon

What you do now is to:

1. Visit a web site that sells any cellphones
2. use any search engine to download inspirational quote
3. Add your visited sites at your bookmarks
4. send an e-mail message, entitled "akong_midterm", CC to your classmate, and BCC to prince_cancer1981@yahoo.com.ph. attached the downloaded quote to your message.
5. Reply any message that you have received, CC to my e-mail address.
6. Make sure to add comment to this blog.

IT 01

Computer System

"In order to make a computer work, information needs to be converted into a format that can be understood by the computer.”

Understanding a computer’s basic data units such as binary numbers, bits, bytes, words, etc. and their conversions from and to octal, decimal, and hexadecimal digits
Understanding basic concepts of computer internal data representation, focusing on numeric data, character codes etc

Some Terminology

Data representation unit and processing unit

1. Binary Digits (Bits)

Two levels of status in computer’s electronic circuits
Whether the electric current passes through it or not
Whether the voltage is high or low
1 digit of the binary system represented by "1" or "0"
Smallest unit that represents data inside the computer
1 bit can represent 2 values of data, "0" or "1"
2 bits can represent 4 different values
"00", "01", "10", "11"

Bit representation

2. Bytes
A byte is a unit that represents with 8 bits 1 character or number, 1 byte = 8 bits
E.g. "00000000", "00000010", etc.
1 bit can be represented in 2 ways, i.e. combination of 8 bit patterns into 1 byte enables the representation of 28 = 256 types of information
Using a 1-byte word, 256 different characters can be represented – sufficient for most Western character sets
However, the number of kanji (Chinese characters) amounts to thousands of different characters, hence a 1-byte word system is insufficient
Two bytes are connected to obtain 16 bits, 216 = 65,536
A 2-byte word

3. Word
The smallest unit that represents data inside a computer
Increase operation speed

4. Number systems
Binary system is used to simplify the structure of electronic circuits that make up a computer
Hexadecimal number is a numeric value represented by 16 numerals from "0" to "15" to ease the representation of binary numbers for humans – computers are capable of only using binary numbers

Numeric Systems
Also known as Base Systems or Radix Systems
Available digits:

Decimal system (base 10)
0, 1, 2, 3, 4, 5, 6, 7, 8, 9

Binary system (base 2)
0, 1

Octal system (base 8)
0, 1, 2, 3, 4, 5, 6, 7

Hexadecimal (base 16)
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F
where A=10,B=11,C=12,D=13,E=14,F=15


Addition and subtraction of binary numbers

Addition
0 + 0 = 0 (or 010)
0 + 1 = 1 (or 110)
1 + 0 = 1 (or 110)
1 + 1 = 10 (or 210)

Subtraction
0 – 0 = 0
0 – 1 = -1
1 – 0 = 1
1 – 1 = 0

4. Addition and subtraction of hexadecimal numbers

Addition
Performed starting at the lowest (first from the right) digit
A carry to the upper digit is performed when the result is higher than 16

Subtraction
Performed starting at the lowest (first from the right) digit
A borrow from the upper digit is performed when the result is negative

First column from right
D + 7 = (In the decimal system: 13 + 7 = 20) = 16 (carried 1) + 4
The sum of the first column is 4 and 1 is carried to the second column.
Second column from right
1 + 8 + 1 = (In the decimal system: 10) = A
Carried from the first column
Third column from right
A + B = (In the decimal system: 10 + 11 = 21) = 16 (carried 1) + 5The sum of the third column is 5 and 1 is carried to the fourth column.
The result is (15A4)16.

Hexadecimal Subtraction
First column from right
Since 3 – 4 = –1, a borrow is performed from D in the second digit (D becomes C).
16 (borrowed 1) + 3 – 4 = F (In the decimal system: 19 – 4 = 15)
Second column from right
C – 7 = 5 (In the decimal system: 12 – 7 = 5)
Third column
6 – 1 = 5
The result is (55F)16.