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I learned about: program related to maths
Ceil()= round up
Floor()= round down
import random= generates random numbers
abs= absolute value
int= integerThe function can only have 1 argument but can combine functions in one argument.
The function can be assigned to a variable.
The order of the argument makes difference. The order of the argument decides which one goes first and which one goes last.
The import random => makes the random numberProgram2
a. CEil() function rounds the number up to the nearest integer.
b Floor() function rounds the number down to the nearest integer.
c. THe syntax for both functions are same as the syntax for math.It firstly asks for the user to enter the name, then the student Id, and lastly course number. After writing all the answers to those questions, it labels in (Name, ID, and class enrollment)
String literal escape sequence is a sequence of characters from the source character set enclosed in double quotation marks. They are used to represent a sequence of characters.
When it changes to /t, it means ‘tab’, it is an escape sequence for the tab character.a. Instead of print(compoundClass[3]), type print(compoundClass[4]). If you put compoundClass[5]), it won’t work since there is no compoundClass as it starts from compoundClass[0].
b. compoundClass = [“alkanes”, “alkenes”, “alcohols”, “ketones”, “alkyl halides”, “alkynes”]
print(compoundClass[5]) I add “alkynes” so there is compoundClass[5].
c. compoundClass = [“alkanes”, “alkenes”, “alcohols”, “ketones”, “alkyl halides”, “alkynes”]
print(compoundClass[-1]) I could observe that it starts count from the back. So it prints “alkynes”.
e. compoundClass = [“alkanes”, “alkenes”, “alcohols”, “ketones”, “alkyl halides”, “alkynes”]
print(compoundClass[-2]) It prints out alkyl halides.
f. Positive starts from the alkanes and goes on, and negative is the opposite of positive. It goes from back to forward.
g. It prints out all the compoundClass written.Supercomputers are used for large and hard mathematical computations. Mainframe computers are used as storage for large databases and serve a maximum number of users simultaneously. And as the name says “super” computer, it is the largest computer. Mainframe computers are much smaller than Supercomputers. Since Supercomputers focused on executive few programs as fast as possible while mainframe uses its power to the executive as many programs concurrently. A server is software that provides services to other programs or users.
Laptop: Nowadays. due to covid, many people use a laptop. It is a computer that is portable for use while traveling, but they do not come with optical drives for use with CDs or DVDs. It also costs high prices.
Mobile Phone: I bet most of the people at least have one. With the due invention of the mobile phone, there are more ways to communicate with others that can be an excellent resource.
The resource is a source, supply, or support that can be used for making benefits or profits.
Video card- Also called a Graphic card, is an expansion card that generates the video signal sends graphical information to a video display device such as a monitor and tv.
CPU- Central processing unit, is the main processor which is composed of main memory, control unit, and arithmetic logic unit.
Hard drive- Hard disk drive, is a component that stores all the data on our computer, from files to software such as documents, pictures, music, videos, programs.
Microsoft Windows and macOS are my favorites since I have never heard of Linux. Microsoft Windows and macOS are both famous operating systems allow computers to run user applications Allows you to store information in files, connect with the world, and more. Both use a graphical user interface and both have command-line tools. Windows is a group of various proprietary graphical operating systems which is provided by Microsoft Incorporation. macOS stands for Macintosh Operating System. It is a series of proprietary graphical operating systems which is provided by Apple Incorporation. Firstly, they are developed by different companies. Microsoft is made by Microsoft Incorporation, and macOS is made by Apple Incorporation. And Microsoft Windows was published in 1985, which 16 years later macOS is launched. For Microsoft Windows, it was made to design for various different PC companies. But macOS was just made to design for their own company. Right now, the latest version for Microsoft Windows is Windows 10, and macOS has a 10.15.1 version for the latest version. Both of them are for workstations and personal computers. And nowadays why Microsoft Windows is more famous and well-used by people is that the Mac hasn’t gained more share in the computer market is the perceived lack of software written for the operating system. Apple is well known for designing personal computers and entertainment devices such as the iPod. The product has gone through a series of developments to meet the needs of consumers. Conversely, Microsoft is known when it comes to operating systems and applications such as Windows and Office.
Run Length Encoding is the Lossless compression algorithm that converts consecutive identical values into a code consisting of the character and the number marking the length of the run. Replace each row with numbers that say how many consecutive pixels are the same colour, always starting with the number of white pixels.
1. File compression is used to reduce the file size of one or more files. File compression reduces the financial cost of running a network and takes up less storage space.
2. Lossless means exactly it doesn’t lose any of the data. Lossless, A file can be restored in its original form. Lossless compression does not reduce the size of data. Lossless Compression is used in Text, images, sound. Lossy means it losses data when the compression occurs. It does not restore or rebuild in its original form. It also reduces the size of data. Lossy compression is mostly used in images, audio, and video.
3. JPEG, GIF, MP4 -> Lossy
PNG, BMP, ALAC -> Lossless1. VPN can prevent web browsers and others from accessing your connection, helping to keep the information you send and receive anonymous and secure.
2. VPNs can securely connect a user to a company’s internal network or to the public Internet.
1. VPN can prevent web browsers and others from accessing your connection, helping to keep the information you send and receive anonymous and secure.
2. VPNs can securely connect a user to a company’s internal network or to the public Internet.
Symmetric encryption uses a single key that needs to be shared among the people who need to receive the message. And asymmetric encryption uses a pair of public key and a private key to encrypt and decrypt messages when communicating
– Turn on two-factor authentication
turn on two-factor authentication to protect account takeovers that can lead to payment fraud. Even if a user’s original password is leaked or stolen, only the user receives the one-time password code via SMS that’s needed to log in to a digital payment app or site.– Verify your payment recipient
Many digital payment systems lack the checks and balances we’re used to with more traditional payments. If you send money to the wrong address/person it can be lost forever.– Double-check QR codes
Before scanning a QR code, especially one on printed material in a public place, make sure it hasn’t been pasted over with a different code.– Don’t reuse passwords
Once a criminal acquires stolen data, they could potentially access any other accounts protected by the same username and password.A constant does not change its value but variable changes its value depends on the equation. And when constants are written in numbers, variables are written in letters or symbols.
