Analog Nepal - ऐनालाँग नेपाल

DSL Stands for "Digital Subscriber Line." DSL is a communications medium used to transfer  digital  signals over standard telephone lines. Along with cable Internet, DSL is one of the most popular ways  ISPs  provide  broadband Internet access. When you make a telephone call using a landline, the voice signal is transmitted using low frequencies from 0  Hz  to 4  kHz . This range, called the "voiceband," only uses a small part of the frequency range supported by copper phone lines. Therefore, DSL makes use of the higher frequencies to transmit digital signals, in the range of 25 kHz to 1.5  MHz . While these frequencies are higher than the highest audible frequency (20 kHz), then can still cause interference during phone conversations. Therefore, DSL filters or splitters are used to make sure the high frequencies do not interfere with phone calls. Symmetric DSL ( SDSL ) splits the upstream and downstream frequencies evenly, providing...

Basics and Overview of Flip Flops A flip flop is an electronic circuit with two stable states that can be used to store binary data. The stored data can be changed by applying varying inputs. Flip-flops and latches are fundamental building blocks of digital electronics systems used in computers, communications, and many other types of systems. Flip-flops and latches are used as  data storage  elements. It is the basic storage element in sequential logic. But first let’s clarify the difference between a latch and a flip flop. Flip flop v/s Latch The basic difference between a latch and a flip-flop is a gating or clocking mechanism. For example, let us talk about SR latch and SR flip-flops. In this circuit when you Set S as active the output Q would be high and Q’ will be low. This is irrespective of anything else. (This is an active low circuit so active here means low, but for an active high circuit active would mean high) SR Latch A flip flop on the other hand is...

A multiplexer is a circuit that accept many input but give only one output. A demultiplexer function exactly in the reverse of  a multiplexer, that is a demultiplexer accepts only one input and gives many outputs. Generally multiplexer and demultiplexer are used together, because of the communication systems are bi directional. Table of Contents Mutliplexer: Understanding 4-to-1 Multiplexer: Applications of Multiplexer: Demultiplexer: Understanding 1- to-4  Demultiplexer: Applications of Demultiplexer: Mutliplexer: Multiplexer means many into one. A multiplexer is a circuit used to select and route any one of the several input signals to a signal output. An simple example of an non electronic circuit of a multiplexer is a single pole multiposition switch. Multiposition switches are widely used in many  electronics circuits . However circuits that operate at high speed require the multiplexer to be automatically selected. A mechanical switc...