They are represented as bits, nibble, bytes and word

Since it is a positive number. 1's complement will come only for negative number.

It depends on
(a) Clock speed
(b) Instruction set
(c) Word size

Operating systems for mobile devices
Mobile devices such as phones, tablets and MP3 players are different from desktop and laptop computers and hence they need special Operating Systems. Examples of mobile Operating Systems are Apple iOS and Google Android. The iOS running on an iPad is

Operating systems for mobile devices generally are not as fully featured as those made for desktop and laptop computers and they are not able to run all software.

Fingerprint Scanner:
Finger print Scanner is a fingerprint recognition device used for computer security, equipped with the fingerprint recognition feature that uses biometric technology. Fingerprint Reader / Scanner is a very safe and convenient device for security instead of using passwords, which is vulnerable to fraud and is hard to remember.
Retinal Scanner:
This performs a retinal scan which is a biometric technique that uses unique patterns on a person's retinal blood vessels.

 1)  0 x 0 = 0
 2)  1 x 1 = 1
 3)  1 x 0 = 0
 4)  0 x 0 = 0

The state represented in a algorithm is set of variables. At any place the value of the variables are substituted and evaluation is done.

Differences between computer organisation and Computer Architecture:

Copying Files and Folders to removable disk:
There are several methods of transferring files to or from a removable disk:
(i) Copy and Paste
(ii) Send To
METHOD I - Copy and Paste
(i) Plug the USB flash drive directly into an available USB port.
(ii) If the USB flash drive or external drive folder does NOT open automatically, follow these steps:
(iii) Click → Start Computer.

(iv) Double-click on the Removable Disk associated with the USB flash drive.

(v) Navigate to the -folders in your computer containing files you want to transfer. Right-click on the file you want to copy, then select Copy.

(iv) Return to the Removable Disk window, right-click within the window, then select Paste.

METHOD II - Send To
(i) Plug the USB flash drive directly into an available USB port.
(ii) Navigate to the folders in your computer containing files you want to transfer.
(iii) Right-click on the file you want to transfer to your removable disk.
(iv) Click Send To and select the Removable Disk associated with the USB flash drive.

1. m, n:= 2, 5
2. -- m, n = ? , ?
3. m,n: = m + 3, n - 1
4. -- m, n = ? , ?
The assignment in line (1) stores 2 in variable m, and 5 in variable n.
\(m\ n\\ \boxed { 2 } \ \boxed { 5 } \)
The assignment in line (3) evaluates the expressions m + 3 and n - 1 using the current values of m and n as
m+3,n-1
= 2+ 3,5-1
=5,4
and stores the values 5 and 4 in the variables m and n, respectively.
\(m\ n\\ \boxed { 4 } \ \boxed { 4 } \)
1. m, n:= 2,5
2. -- m, n = 2 , 5
3. m, n : = m + 3, n - 1
4. -- m, n = 2 + 3, 5-1 = 5, 4
Values of the variables after the two assignments are shown in line (2) and line (4).

(i) Unicode is the newest concept in digital coding. In Unicode, every number has a unique character.
(ii) Unicode is the universal character encoding standard used for the representation of text for computer processing
(iii) It can be used to store and process all significant current and past languages. Unicode provides a unique hex encoded number for every character
(iv) Unicode is a 16-bit code, which allows for about 65,000 different representations. This is enough to encode the popular Asian languages (Chinese, Korean, Japanese, etc.)
(v) It also turns out that ASCII codes are preserved. Therefore, conversion between ASCII and Unicode is a simple method (take all one byte ASCII codes and zero-extend them to 16 bits).
(vi) This will be the Unicode version of the ASCII characters. The C, C++ programs use the ASCII Code, and Java programs have already used Unicode. The Unicode Standard has been adopted by industry leaders such as Apple, HP, IBM, Microsoft, Oracle, SAP, Sun, Sybase, and Unisys. Unicode is required by web users and modem standards.

(i) The Sixth Generation, computers could be defined as the era of intelligent computers, based on Artificial Neural Networks. This generation gave a start to parallel computing.
(ii) One of the most dramatic changes in the sixth generation will be the explosive growth of wide is a component of artificial intelligence
(iii) Robotics is a branch of engineering that involves the conception, design, manufacture, and operation of robots.
(iv) This field overlaps with electronics, computer science, artificial intelligence, mechatronics, nanotechnology and bioengineering.
(v) Artificial neural networks (ANNs) are computing systems inspired by the biological neural networks that constitute animal brains.
(vi) Such systems learn (progressively improve performance on) tasks by considering examples, generally without task-specific programming.
(vii) An ANN is based on a collection of connected units or nodes called Artificial Neurons (analogous to biological neurons in an animal brain).
(viii) Each connection (synapse) between neurons can transmit a signal from one to another. The receiving neuron can process the signal(s) and then signal neurons connected to it.
(ix) Parallel computing is a type of computation in which many calculations or the execution of processes are carried out simultaneously.
(x) Large problems can often be divided into smaller ones, which can then be solved at the same time. There are several different forms of parallel computing: bit-level, instruction-level, data, and task parallelism.
(xi) Parallelism has been employed for many years, mainly in high-performance computing, but interest in it has grown lately due to the physical constraints preventing frequency scaling.
(xii) As power consumption by computers has become a concern in recent years, parallel computing has become the dominant paradigm in computer architecture, mainly in the form of multi-core processors.