Binary equivalent of  -46 =101110
8 bit format =00101110
1's Complement = 11010001
Add 1 to LSB =1
2's Complement of -46 = 11010010

The Motherboard of a computer has many I/O sockets that are connected to the ports.

Model of the action with an assignment statement:
1. --farmer, goat, grass, wolf = L,L.L.L.
2. Farmer, goat:= R, R
3. -farmer, goat, grass, wolf = R.R.L,L
4. --farmer: = L
5. --farmer, goat, grass, wolf = L,R,L.L
6. farmer, grass: = R, R
7. --farmer, goat, grass, wolf = R,R,R,L
8. farmer, goat: = L, L
9. --farmer, goat, grass, wolf = L,L,R,L
10. farmer, wolf: = R.R
11. --farmer, goat, grass, wolf = R,L,R,R
12. farmer: = L
13. --farmer, goat, grass, wolf = L,L,K,R
14. farmer, goat: = R,R
15. -- farmer, goat, grass, wolf = R,R,R,R

Different server distributions in Linux OS:
Ubuntu, Linux Mint, Debian, Fedora, RedHat.

Ultra violet rays are used to erase the contents of EPROM. EPROM retains its contents until it is exposed to ultraviolet light. The ultraviolet light clears its contents making it possible to reprogram the memory.

Input Unit	Output Unit
An input device feeds information to a computer system for processing.	output device reproduces or displays the results of that processing.
Input devices only allow for input of data to a computer.	output devices only receive the output of data from another device.
It is a peripheral device used to provide data and control signals to an information processing system such as computer.	It is a unit which sends data from the computer to another device.
Eg. keyboard, mouse	Eg. printer, monitor

The microprocessor is made up on main units. They are:
(i) Arithmetic and Logic unit (ALU): 
To perform arithmetic and logical instructions based on computer instructions.
(ii) Control unit : 
To control the overall operations of the computer through signals.
(iii) Registers (Internal Memory):
They are used to hold the instruction and data for the execution of the processor.

(i) An operating system (OS) is a software program that enables the computer hardware to communicate and operate with the computer software.
(ii) It also acts as an interface between the user and the computer hardware and controls the execution of all kinds of programs.

(i) This is the operating system that provides a Graphic User Interface (GUI) through which the user can easily navigate and interact.
(ii) The computer responds almost immediately after an instruction has been entered, and the user can enter new instructions after seeing the results of the previous instructions.

(i) Each program or task is given a fixed amount of time to execute.
(ii) The CPU continues with the execution till either the allotted time is over or there is some interrupt request or the task is completed before the allotted time.

Assignment Operator	Equality Operator
Assignment operator is used to assign the values to the variable.	The equality operator is used to compare the values of both the variables and the result is true or false.

Yes, hard drives and floppy drives are represented with drive letters.
A: drive is used for floppy disk of 3.5 inches and storage capacity of 1.44 MB.
B: drive is for floppy of size 5.25 inches and of storage capacity of 1.2 MB
So, we can say like
A: First Floppy Drive
B: Second Floppy Drive
C: D:E:.....Z: Hard Disk Drives, CD/DVD

Customers are waiting in a line at a counter. The man at the counter wants to know how many customers are waiting in the line.

Instead of counting the length himself, he asks customer A for the length of the line with him at the head, customer A asks customer B for the length of the line with customer B at the head, and so on. When the query reaches the last customer in the line, E, since there is no one behind him, he replies 1 to D who asked him. D replies 1 + 1 = 2 to C, C replies 1 + 2 = 3 to B, B replies 1 + 3 = 4 to A, and A replies 1 + 4 = 5 to the man in the counter

The main use of Operating System is
1. to ensure that a computer can be used to extract what the user wants it do.
2. Easy interaction between the users and computers.
3. Starting computer operation automatically when power is turned on (Booting),
4. Controlling Input and Output Devices
5. Manage the utilization of main memory.
6. Providing security to user programs.

Octal to Decimal Conversion:
To convert Octal to Decimal, we can use positional notation method.
1. Write down the Octal digits and list the powers of8 from right to left(Positional Notation)
2. For each positional notation of the digit write the equivalent weight.
3. Multiply each digit with its corresponding weight
4. Add all the values
Example

Hexadecimal to Decimal Conversion:
 To convert Hexadecimal to Decimal we can use positional notation-method.
1. Write down the Hexadecimal digits and list the powers of 16 from right to left
(Positional Notation)
2. For each positional notation written for the digit, now write the equivalent weight.
3. Multiply each digit with its corresponding weight
4. Add all the values to get one final value.
Example-
Convert (25F)₁₆ into its equivalent Decimal number.

S.No Versions Logo Year Prominent feature 1. Windows 1.x 1985 1. Introduction of GUI in 16 - bit. processor
2. Mouse was introduced as an input device 2. Windows 2.x 1987 1. Supports to minimize or maximize windows.
2. Control panel feature was introduced with
various system settings and customizing options. 3. Windows 3.x 1992 1. Introduced the concept of multitasking.
2. Supported 256 colors which brought a more
modern, colorful look to the interface. 4. Windows 95 1995 1. Introduced Start button, the taskbar, Windows Explorer and Start menu.
2. Introduced 32 - bit processor and focused more on multitasking. 5. Windows 98 1998 1. Integration of the Web browser (Internet Explorer) with the Operating System.
2. DOS gaming began to disappear as Windows-based games improved.
3. Plug and play feature was introduced. 6. Windows NT   Designed to act as servers in network. 7. Windows Me 2000 It introduced automated system diagnostics and recovery tools. 8. Windows 2000 2000 1. Served as an Operating System for business
desktop and laptop systems.
2. Four versions of Windows 2000 were released: Professional (for business)
3. desktop and laptop systems), Server (both a
Web server and an office server),
4. Advanced Server (for line-of-business 
applications) and Data Centre Server (for high traffic computer networks). 9. Windows XP 2001 1. Introduced 64-bit Processor.
2. Improved Windows appearance with themes and offered a stable version 10. Windows Vista 2006 Updated the look and feel of Windows 11. Windows 7 2009 Booting time was improved, introduced new user interfaces like Aero Peek, pinning programs to the taskbar, handwriting recognition etc, and Internet Explorer 8. 12. Windows 8 2012 1. Windows 8 was faster than previous versions of Windows.
2. Start button was removed
3. Windows 8 takes better advantage of multicore processing, solid-state drives (SSD), touch screens, and other alternate input methods.
4. Served as a common platform for mobile and computer. 13. Windows 10 2015 1. Start Button was added again.
2. Multiple desktops.
3. Central Notification Center for App notification and quick actions.
4. Cortana voice-activated personal assistant.

The method of repeated multiplication by 2 has to be used to convert such kinds of decimal fractions.
The steps involved in the method of repeated multiplication by 2.
Step 1: Multiply the decimal fraction by 2 and note. the integer part. The integer part is either 0 or 1.
Step 2: Discard the integer part of the previous product. Multiply the fractional part of the previous product by 2. Repeat Step 1 until the same fraction repeats or terminates (0).
Step 3: The resulting integer part forms a sequence of 0's and 1's that become the binary equivalent of a decimal fractions.
Step 4: The final answer is to be written from first. integer part obtained till the last integer part is obtained.