JARINGAN KOMPUTER (COMPUTER NETWORKING) - MEE IDU

Digital Modulation gives more data limit, high information security, faster framework accessibility with incredible quality correspondence. Consequently, computerized regulation methods have a more noteworthy interest, for their ability to pass on bigger measures of information than simple ones.       There are numerous kinds of computerized regulation strategies and we can even utilize a blend of these procedures also. In this section, we will talk about the most unmistakable computerized regulation methods.  A. Amplitude Shift Keying  The amplitude of the resultant yield relies on the info information whether it ought to be a zero level or a variety of positive and negative, contingent on the transporter recurrence.  Amplitude Shift Keying (ASK) is a kind of Amplitude Modulation that addresses the paired information as varieties in the plentifulness of a sign.  Following is the outline for ASK tweaked waveform alongside its information.  An...

  MODULATION TECHNIQUES The video will mainly display and explain about : a.      Block Diagram of Modulation b.      Types of Modulation i)                Analog Modulation ii)              Digital Modulation c.      Analog Modulation i)                Amplitude Modulation ii)              Frequency Modulation iii)            Phase Modulation   I.                INTRODUCTION A message or information that needs to be sent to another user can relate to baseband signals . There will also be a transmitter that generates carr...

Invisible electromagnetic waves makes phone calls and internet usage possible. Spectrum is electromagnetic frequency range which is a precious resources.           Each time we use our mobile phones to share or receive information, the mobile phones emits electromagnetic waves. These waves are picked up by cell tower and transmitted to the destination tower near the receiver to be sent to the end user. This technique iis called  cellular communication. In cellular communication, geographical areas are divided into different cells. The cells need to transmit different signals based on the users. Each user's frequency is unique. This way a certain device is built to accept certain signal with filter circuit. By using frequency modulation, two  frequencies (high and low) are needed to transmit signals.  However assigning a different signals fora approximately 5 billion users is impossible.  ELECTROMAGNETIC SPECTRUM > Ranges fr...

 MODULATION      Before the electromagnetic waves are transmitted, they should be modulated to a high-frequency signal. SIgnal with higher frequency known as carrier signal. Gambar 1      Signal has amplitude, frequency, and phase. Carrier signals are varied depends on the message signals. For example, the frequency of the carrier signal is varied according to the amplitude of the message signal known as frequency modulation so the produced modulated signal is also a high frequency.  Amplitude modulation, the amplitude of carrier signals is varied based on the value of the message signal. Amplitude and frequency modulation are all analog types which can degrade the quality of signals.  In today's world, all operations are carried out in digital form. How digital modulation techniques work? a. AMPLITUDE SHIFT KEYING     Based on the digital pulse, the amplitude of the carrier signal is adjusted as high amplitude means one and low amp...

                                                        LAN (Local Area Network), jaringan yang melatarbelakangi terbentuknya kabel LAN.                                               Gambar 1.1 Konsep jaringan computer muncul pada tahun 1940-an di Amerika    dari sebuah proyek di laboratorium BELL dan Harvard University Research Group yang dipimpin oleh Prof. H. Aiken. Pada mulanya proyek tersbut hanya ingin memanfaatka perangkat computer yang harus dipakai bersama. Ketika harga computer-komputer kecil mulai menurun, penggunaan computer dan jaringannya sudah mulai beragam mulai dari mengatur proses komunikasi antar computer ( peer to peer ) tanpa melalui ...