Computer is an electronic device which converts row data into meaningful information .It can perform many task.It work very fast and accuratc.A computer programmed device with a set of instnections of perform is spicilic task and generate result at a very high speed
A computer is an electronic device, operating under the control of instructions stored in its own memory that can accept data (input), process the data according to specified rules, provide information (output), and store the information for future use
Chapter 1 computer hardware and flow of informationFrankie Jones
FP203 Computer Organization
Chapter 1 computer hardware and flow of information
This topic covers the computer fundamentals, functional unit,
basic operational concepts and bus structure.
Computer is an electronic device which converts row data into meaningful information .It can perform many task.It work very fast and accuratc.A computer programmed device with a set of instnections of perform is spicilic task and generate result at a very high speed
A computer is an electronic device, operating under the control of instructions stored in its own memory that can accept data (input), process the data according to specified rules, provide information (output), and store the information for future use
Chapter 1 computer hardware and flow of informationFrankie Jones
FP203 Computer Organization
Chapter 1 computer hardware and flow of information
This topic covers the computer fundamentals, functional unit,
basic operational concepts and bus structure.
What is Computer, Functionalities of a computer, Computer Components, Hardware, software, Input Devices, Output Devices, CPU (Central Processing Unit), Memory, Unit of Measurements, Classification of Computers, Computer Languages, Generation of Computers, Data, Information and Knowledge, Characteristics of Computer, Computer Viruses,
based on stored program design
processor system
CPU
memory
input/output system
input/output devices
secondary storage
manages the instruction-execution cycle
FETCH – DECODE – EXECUTE
coordinates the activities of other devices
What is Computer, Functionalities of a computer, Computer Components, Hardware, software, Input Devices, Output Devices, CPU (Central Processing Unit), Memory, Unit of Measurements, Classification of Computers, Computer Languages, Generation of Computers, Data, Information and Knowledge, Characteristics of Computer, Computer Viruses,
based on stored program design
processor system
CPU
memory
input/output system
input/output devices
secondary storage
manages the instruction-execution cycle
FETCH – DECODE – EXECUTE
coordinates the activities of other devices
Protecting Data in the Cloud: The Truth about SaaS BackupDatto
Backupify teamed up with IT community Spiceworks to produce a piece of research focused on how today's IT departments back up data in their SaaS applications. This slide deck reveals some surprising stats on how IT professionals deal with data in the cloud.
TOPICS
1 Introduction, Characteristics of Computers, Block Diagram of Computer
2 Types of Computers and Features
3 Types of Programming Languages
4 Data Organization, Types of Memory (Primary and Secondary)
5 I/O Devices, Number System
The computer organization is concerned with the structure and behaviour of digital computers.
Organizational attributes include those hardware details transparent to the programmer, such as control signals, interfaces between the computer and peripherals; and the memory technology used.
9. Primary Memory 1,099,511,627,776 40 2 TB Terabyte 1,073,741,824 30 2 GB Gigabyte 1,048,576 20 2 MB Megabyte 1,024 10 2 KB Kilobyte 1 0 2 Byte Number of bytes POWER OF 2 SYMBOL UNIT
10. Primary and Secondary Memory Comparison Slow Cheap Large capacity Not connected directly to the processor Fast Expensive Low capacity Connects directly to the processor Secondary memory Primary memory
11.
12.
13. Fetch-Decode-Execute Cycle (cont’d) Main Memory Control Unit Arithmetic/Logic Unit 1 2 3 4 Instruction Cycle Execution Cycle Fetch Decode Execute Store cpu RAM
19. Computer Languages Computer language evolution The only language understood by a computer is machine language. Note:
20. Writing, Editing, Compiling, and Linking Programs typical Java environment Primary Memory . . . . . . Disk Disk Disk Editor Compiler Class Loader Program is created in an editor and stored on disk in a file ending with .java . Compiler creates bytecodes and stores them on disk in a file ending with .class . Class loader reads .class files containing bytecodes from disk and puts those bytecodes in memory. Phase 1 Phase 2 Phase 3 Primary Memory . . . . . . Bytecode Verifier Bytecode verifier confirms that all bytecodes are valid and do not violate Java’s security restrictions. Phase 4 Primary Memory . . . . . . Interpreter Interpreter reads bytecodes and translates them into a language that the computer can understand, possibly storing data values as the program executes. Phase 5
22. System Development Model Figure 1-12 System development model An old programming proverb: Resist the temptation to code. Note: Pseudocode A precise algorithmic description of program logic. Note: