Nama                   : Andriyano Nento Bata

 

Kelas                   : A (Sistem Informasi)

 

NIM                    : 531412091

 

 

 

Look at A appoisite. Which type of computer do these descriptions refer to?

 

1.      A hand held computer which can be used as telephone, a web explorer and a personal organizer PDA

 

2.      A typical computer found in many businesses and popular for home use PC

 

3.      A large computer used for intensive data processing and often linked to many terminals a mainframe

 

4.      A small computer that fist into items of clothing wearable computer

 

5.      A portable computer that can be closed up like a briefcase, but it can be as powerful as a desktop PC Laptop

 

6.      A full fuction PC, though it only weighs 1.2 kg you can go to a meeting and write your notes on it, like a paper notepad; its screen mode can be changed from portrait to landscape Tablet PC

 

 

 

Look at the computer advertisement and find this information

 

 

 

1.      What type of computer is advertised?

 

Answer            : Laptop

 

2.      What kind of screen does it have?

 

Answer            : TFT Screen

 

3.      Which pointing device replaces the mouse?

 

Answer            : Touchpad

 

4.      What type of ports does it have for connecting camera and music player?

 

Answer            : USB (Universal Serial Bus)

 

5.      What sort of power supply does it use?

 

Answer            : Battery

 

 

 

Read this interview with Adam Hawkins, an IT manager, and complete it with words from the PDA section opposite.

 

Interviewer       : What are the basic features of a PDA?

 

Adam               : Well, a typical PDA is a (1) Hand held device that runs on batteries and combines computing, phone and Net capabilities

 

Interviewer       : And how do you enter information?

 

Adam               : For input, you can use a (2) Small Keyboard or pen to write and make selections on a (3) touch screen they also have buttons for launching programs. Some models have a small keyboard. They may have a (4) voice recognition system that reacts to the user’s voice.

 

Interviewer       : Do they need special software?

 

Adam               : Yes, most of them run on windows Mobile. Palmtops supported by Palm Inc. use Palm OS. Pen based systems include (5) Handwriting recognition so you write on the screen and the computer recognizes your handwriting and inserts the appropriate letters.

 

Interviewer       : What sort of things can you do with a PDA?

 

Adam               : You can store personal information, take notes, draw diagrams and make calculations. Many PDAs can access the Net via (6) wireless technology.

 

 

 

 

 

 

 

 

Konsep Binary Dan Sistem Komputer

 

1.      Binary Digit (bit)

 

Komputer hanya mengenal angka 0 dan1

 

0 artinya off bit (bit mati)

 

1 artinya on bit (bit hidup)

 

2.      Basis Dua

 

Jika ada 8 bit maka ada kemungkinan, bit memiliki kombinasi 0 semua (00000000)

 

Kombinasi 1 semua (11111111)

 

Atau kombinasi 0 & 1 sebanyak 8 bit,

 

3.      Basis Dua (2)

 

Karena hanya terdiri dari 2 angka, maka dapat dikatakan bilangan basis dua

 

Tiap-tiap bit dapat direpresentasikan dengan pangkat 0-7 (8 bit).

 

 

 

            2⁷   2⁶   2⁵   2⁴   2³   2²   2¹   2⁰

 

               

 

 

 

^{128     64     32      16      8        4        2       1}

 

 

 

4.      Penjumlahan biner

 

Jika ada dua deretan biner 8 bit dijumlahkan,

 

contoh :

 

10011000

 

00111001 +

 

Maka langkah-langkah penjumlahannya adalah sebagai berikut :

 

1. Jumlahkan bit paling kanan, daricontoh diatas 0 + 1 = 1

 

2. Jika mendapati bit 1+1 maka hasilnyaadalah 10, dituliskan 0 dibawah hasil penjumlahan dan 1 disimpan diatas bit berikutnya.

 

3. Jika mendapati penjumlahan 1+1 danterdapat sisa penambahan dari bit sebelumnya maka hasilnya adalah 11, dituliskan 1 dibawah hasil penjumlahan dan 1 disimpan diatas bit berikutnya.

 

5.      Pengurangan Biner

 

●Rumus sederhana :

 

–0 – 0 = 0

 

–1 – 0 = 1

 

–1 – 1 = 0

 

–0 – 1 = 1, pinjam 1

 

6.      Perkalian Biner

 

●Rumus sederhana :

 

–0 x 0 = 0

 

–0 x 1 = 0

 

–1 x 0 = 0

 

–1 x 1 = 1

 

●Setelah hasil perkalian didapatkan, tambahkan hasil perkalian tersebut.

 

 

 

 

 

Sistem komputer adalah elemen-elemen yang terkait untuk menjalankan suatu aktifitas dengan menggunakan komputer.

 

Tujuan pokok dari sistem komputer adalah untuk mengolah data menjadi informasi.

 

 

 

-       Komponen Sistem Komputer

 

1.      Hardware (Perangkat Keras)

 

2.       Software (Perangkat Lunak)

 

3.      Brainware (Perangkat pikir)

 

-       Siklus pemrosesan

 

Siklus pemrosesan → siklus

 

perintah mesin yang terjadi

 

jutaan kali per detik atau lebih

 

tergantung faktor :

 

·         Kecepatan jam (clock speed)

 

·         Panjang kata (word length)

 

·         Lebar bus (bus width)

 

·         Jumlah transistor dalam chip.

 

 

 

-       Penyimpanan Primer

 

·         Register

 

·         Random Access Memory (RAM)

 

·         Memori cache

 

·         Read-Only Memory (ROM)

 

 

 

-       Penyimpanan Sekunder

 

·         Media Magnetis

 

Pita Magnetis

 

Cakram Magnetis

 

Antarmuka Disk Drive

 

·         Disket Magnetis

 

Disket magnetis

 

·         Peralatan Penyimpanan Optis

 

Compact Disk Read-Only (CD-ROM)

 

Digital Video Disk (DVD)

 

Fluorescent Multilayer Disk (FMD-ROM)

 

 

 

-       Teknologi Input

 

·         Keyboard

 

·         Mouse

 

·         Mouse-optic

 

·         Trackball

 

·         apan sentuh

 

·         Joystick

 

·         Layar sentuh

 

·         Pengenal Suara

 

·         Barcode Reader

 

 

 

-       Teknologi Output

 

Monitor :

 

·         Tabung Sinar Katoda

 

·         Liquid Crystal Display (LCD)

 

Printer :

 

·         Impact

 

·         Laser nonimpact

 

·         Inkjet

 

·         Plotter