Pengantar/pengenalan (Introduction)

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1 Pengantar/pengenalan (Introduction)
Pertemuan I

2 Latar Belakang mempelajari SO
Komputer, tanpa adanya S/W, hanyalah sekumpulan beberapa alat elektronik (terutama digital) dengan fungsi yang berbeda-beda. SO mengorganisasikan (menyatukan) perangkat-perangkat tersebut sehingga berfungsi sebagai satu unit dengan fungsi yang lengkap. …

3 Introduction Pengertian Sistem Operasi (SO) Sistem Mainframe
Sistem Desktop Sistem Multiprocessor Sistem Terdistribusi Sistem Terklaster (Clustered System) Real-time Systems Handheld Systems Computing Environments

4 Beberapa pengertian SO
A program that: acts as an intermediary between a user of a computer and the computer hardware provide an environtment in which a user can execute programs in convenient dan efficient manner The software component of a computer system that is responsible for the management and coordination of activities and the sharing of the resources of the computer (McGraw-Hill Professional) An operating system (OS) is a computer program that manages the hardware and software resources of a computer (Wikipedia).

5 Pengertian SO (lanjutan)
Operating system goals: Execute user programs and make solving user problems easier. Make the computer system convenient to use. Use the computer hardware in an efficient manner.

6 Kedudukan SO dalam sistem komputer
Sistem Operasi Hardware Driver Perangkat Keras Elektronik (Hardware) BIOS dan firmware Program Aplikasi USERS

7 Komponen2 Sistem Komputer
Hardware – pelaku utama proses komputasi (CPU, memory, I/O devices). SO – mengendalikan dan mengkoordinasikan penggunaan H/W di antara berbagai program aplikasi bagi satu/banyak pengguna (user). Program aplikasi – menentukan bagaimana sumber daya sistem dipakai untuk menyelesaikan masalah-masalah komputasi dari pengguna (compilers, database systems, video games, business programs). Users (people, machines, other computers).

8 Gambaran sebuah sistem komputer

9 Penerapan SO pd sistem komputer
Sistem Mainframe Automatic job sequencing  batch system, meliputi: Simple batch system Multiprogrammed batch system Sistem Desktop, computer system dedicated to a single user. Note: laptop IS a desktop. Sistem Paralel, multiprocessor systems with more than one CPU in close communication  tightly coupled system Sistem Terdistribusi, distribute the computation among several physical processors  loosely coupled system

10 Penerapan SO … (lanjutan)
Sistem terklaster (clustered), clustering memungkinkan 2 sistem atau lebih melakukan storage sharing. Real-time system, sering digunakan pada perangkat kendali pada aplikasi khusus seperti pengendalian scientific experiments, medical imaging systems, industrial control systems, and some display systems. Handheld systems, memiliki karakter: memori kecil, prosesor lemah/lambat, layar tampilan kecil, sumber tenaga batere.

11 Computing Environments
Traditional computing Web-Based Computing Embedded Computing