what is an Operating system ?

An OS system performs these services for application 1) In a multitasking operating system where multiple programs can be running at a same time each application before giving another apllication turn 2) It manages the sharing of internal memory among multiple application 3) It send messages the sharing of internal memory among multiple application 4) It can offload message to each application user about status the of operation and any errors that may have occurred common desktop operating system: Windows is Microsoft flagship OS the DE fact standard for home and business computer in 1985, the GUI-based OS has been released in many versions Mac OS is the operating system for apple Macintosh line of personal computers and workstations. Linux is Unix-like OS that was designed to provide personal computer users a free or very low cost. Linux has a reputation as very efficient and fast-performing system. Windows OS have long dominated the market and continue to d...

 MICROPROCESSOR THE CHARACTERISTICS OF MICROPROCESSOR  1. N-bit processor: A processor is n-bit processor implies that (a) Its ALU is n-bit,i.e. the ALU can perform n-bit operation simultaneously. (b) Its internal data bus and register size is n-bit (c) Its external data bus is also n-bit 2. processing capability :It depends upon the number of instructions and flexibility of each instruction. 3. word length: It depends upon the width of internal data bus, registers , ALU etc. 4. clock frequency: the processing speed of microprocessor depends upon clock frequency. 5. Width of the data bus: this parameter decides word length of the microcomputer. this is the width of the external data bus. 6. Width of the address bus: This parameter decides the memory addressing capability of the microprocessor. 7. I/O addressing capability: The maximum number of the I/O ports accessed by the microprocessor depends upon the width of the I/O address provide in the ...

'                                                WHAT IS OPERATING SYSTEM An operating system is a program that manages the computer hardware, It also provides a basis for application programs and acts as an interface between a user of a computer hardware  1) HARDWARE.  2) THE OPERATING SYSTEM. 3)THE APPLICATION PROGRAMS. 4)THE USERS. HARDWARE: The central processing Unit (CPU) memory and Input/output devices constitute the basic hardware and provide the basic computing resources. OPERATING SYSTEM: It controls and coordinates use of hardware among various applications and users it assigns different jobs to the hardware parts while running a program and get it done from them. It is mediator between computer hardware and software. APPLICATION PROGRAMS:  They define ways in which the system resources are used to sol...