BIDA PRACTICAL

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Practical 3 Download code:- DOWNLOAD Download txt:- Download Download Practical:- Download pdf .Perform the data classification using classification algorithm using R/Python. rainfall Practical 4 Perform the data clustering using clustering algorithm using R/Python newiris Practical - 5 .Perform the Linear regression on the given data warehouse data using R/Python. x Practical 6 Perform the logistic regression on the given data warehouse data using R/Python input Practical 7 Write a Python program to read data from a CSV file, perform simple data analysis, and generate basic insights. (Use Pandas is a Python library) 1. Male to Female ratio on the Titanic: import pandas as pd df= pd.read_csv('train.csv') print(df.columns) print(df['Sex'].value_counts()) print(df['Sex'].value_counts(normalize=True)) 2. Surviving male to female ratio on the Tit...
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Components of computer system

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  • GQ.Explain the major components of computer system and given their functions.

Ans. :-

Components of computer system:-

  •  A computer can process data, pictures, sound and graphics. They can solve highly complicated problems quickly and accurately.
  •  A computer  performs basically five major computer operations or irrespective of their size and make. 
  • These are: 
  • (1) It accepts data or instructions by way of input,
  • (2) It stores data, 
  • (3) It can process data as required by the user, 
  • (4) It gives results in the form of output, and
  •  (5) It controls all operations inside a computer.

Block Diagram of computer

(A) Input Unit 

  • Computers need to receive data and instruction in order to solve any problem. Therefore we need to input the data and instructions into the computers.
  •  The input unit consists of one or more input devices. Keyboard is the one of the most commonly used input device. 
  • Other commonly used input devices are the mouse, floppy disk drive, magnetic tape, etc. All the input devices perform the following functions:
  1.  Accept the data and instructions from the outside world. 
  2. Convert it to a form that the computer can understand. 
  • Supply the converted data to the computer system for further processing. 
(B) Storage Unit . 
  • The storage unit of the computer holds data and instructions that are entered through the input u before they are processed.
  • It preserves the intermediate and final results before these are sent to the output devices.
  • It also saves the data for the later use. The various storage devices of a computer system are divided into two categories

  • 1. Primary Storage . 
  • Stores and provides very fast. This memory is generally used to hold the program being currently executed in the computer, the data being received from the input unit, the intermediate and final results of the program.
 The primary memory is temporary in nature. The data is lost, when the computer is switched off. In order to store the data permanently, the data has to be transferred to the secondary memory.
2. Secondary Storage . 
  • Secondary storage is used like an archive. It stores several programs, documents, data bases etc.
  • The programs that run on the computer are first transferred to the primary memory before their execution.
  • Whenever the results are generated, they are also stored in the secondary memory. The secondary memory is slower and cheaper than the primary memory. Some of the commonly used secondary memory devices are Hard disk, CD, etc.,
Memory Size
  •  All digital computers use the binary system, i.e. O's and 1's. Each character or a number is represented by an 8 bit code.
  •  The set of 8 bits is called a byte. A character occupies 1 byte space. A number occupies 2 bytes space. Byte is the measurement unit of space occupied in the memory. 
The size of the primary storage is specified in KB (Kilobytes) or MB (Megabyte). One KB is equal to 1024 bytes and one MB is equal to 1000KB. The size of the primary storage in a typical PC usually starts at 16MB. PCs having 32 MB, 48MB, 128 MB, 256MB memory are quite common

(C) Output Unit
 The output unit of a computer provides the information and results of a computation to outside world. Printers, Visual Display Unit (VDU) are the commonly used output devices. Other commonly used output devices are floppy disk drive, hard disk drive, and magnetic

(D) Arithmetic Logical Unit
  •  All calculations are performed in the Arithmetic Logic Unit (ALU) of the computer. It also does comparison and takes decision. 
  • The ALU can perform basic operations such as addition, subtraction, multiplication, division, etc. and does logical operations viz, >, <,=, etc.
(E) Control Unit 
  • It controls all other units in the computer. The control unit instructs the input unit, where to store the data after receiving it from the user.
  • The control unit is generally referred as the central nervous system of the computer that control and synchronizes its working.
(F) Central-Processing-Unit 
  • The control unit and ALU of the computer are together known as the Central Processing Unit (CPU). The CPU is like brain which performs the following functions:
  1.   It performs all calculations. 
  2. It takes all decisions. 
  3. It controls all units of the computer.
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