Pengantar Teknologi Informasi Introduction to Computers and Networks

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1 Pengantar Teknologi Informasi Introduction to Computers and Networks

2 DATA – KOMPUTER - INFORMASI
Aplikasi Komputer Informasi Hasil Analisis

3 What is Data ? Data merupakan kumpulan/himpunan fakta dari suatu obyek
Fakta yang mungkin dikumpulkan Nama pohon Jenis pohon Umur pohon Jumlah produksi Harga per kilogram dipasaran, dll

4 What is Data ? Fakta dari sebuah obyek jumlahnya tak terhingga, shg umumnya tidak mungkin semua fakta yg ada dapat terkumpul Fakta yang mungkin dikumpulkan Data Personal Nama, jenis kelamin, tgl lahir, alamat, No Telp Riwayat Pendidikan Jenjang studi, thn masuk, thn lulus, nama institusi pendidikan

5 What is Data ? Untuk menggambarkan realita, kita hrs mendefinisikan satu set data yg dpt mewakili situasi yg sesungguhnya Fakta 1 Fakta 2 Fakta 3 Fakta 4 Fakta 5 Fakta 6 Fakta 7 ?

6 What is Data ? Hanya data yg dibutuhkan saja yg diolah dalam sebuah aplikasi komputer Contoh: Aplikasi Stok Barang Jenis Barang App. Stok Barang Harga Beli Kwantitas Distributor Hanya data yg relevan dng aplikasi saja yg digunakan

7 Information System A system is a group of connected entities and activities which interact for a common purpose An information system is a set of processes, executed on raw data, to produce information that will be useful in decision making Database Sistem Informasi Informasi Pengambilan Keputusan

8 What Is a Computer? How is a computer defined?
Electronic device operating under the control of instructions stored in its own memory Accepts data Raw facts, figures, and symbols Processes data into information Data that is organized, meaningful, and useful Produces and stores results

9 What Is a Computer? What is the information processing cycle? Input
Output Storage Communication

10 The Components of a Computer
What is an input device? Hardware used to enter data and instructions

11 The Components of a Computer
What is an output device? Hardware that conveys information to a user

12 The Components of a Computer
What is the system unit? Box-like case containing electronic components used to process data

13 The Components of a Computer
What are two main components on the motherboard? Central Processing Unit (CPU) Also called a processor Carries out instructions that tell computer what to do Memory Temporary holding place for data and instructions

14 The Components of a Computer
What is storage? Holds data, instructions, and information for future use Storage media Physical material on which data, instructions, and information are stored Storage device Records and retrieves items to and from a storage medium

15 Why Is a Computer So Powerful?
What makes a computer powerful? Storage Reliability and Consistency Speed Accuracy Communications

16 Networks and the Internet
What is a network? Collection of computers and devices connected together Communications Device Communications Media Cables Satellites Enables a connection between computers Cellular radio Telephone lines One type is a modem

17 Networks and the Internet
What is a server? Manages the resources on a network A client accesses the resources on the server

18 Networks and the Internet
What is the Internet? Worldwide collection of networks that connects millions of computers

19 Categories of Computers
What are the categories of computers? Personal computers (desktop) Mobile computers and mobile devices Midrange servers Mainframe computers Supercomputers

20 Servers What types of servers are there?
Midrange server Powerful, large computer that supports up to a few thousand computers Mainframe Very powerful, expensive computer that supports thousands of computers Supercomputer The fastest, most powerful, most expensive computer. Used for applications requiring complex mathematical calculations

21 Computer Applications in Society
What are some examples of computer applications in society? Education Finance Government Healthcare Science Publishing Travel Industry