Digital device

Digital refers to the status of an electronic object that works depending on the activities of binary digits 0 and 1 which are represented by values of a physical quantity such as voltage or magnetic polarization.  Digital device means digital electronic devices that control the flow of current according to logic for the purpose of information processing and system control. Electronic devices are now made by digital components that are grouped to form integrated circuits (IC). In fact, digital devices are consisted using electronic circuits or a combination of them.

Digital device and logic gate:

Digital devices process electronic signals. The electronic signal represents binary bit values of 0 and 1

Binary bit values of 0 and 1 are represented by voltage signals. In Transistor–transistor logic (TTL) circuit logic zero (0) is defined by the voltage level 0 to + 0.8 volt and logic one (1) is defined by the voltage level +2 to + +5 volt. Binary digits (0 and 1) or Boolean logic conditions (true and false) are represented by “Logic 0″ and “logic 1“. These logic 0 and logic 1 are allowed to design circuits and logic gates. Logic gate is an electronic device that implements a Boolean function, a logical operation. Simply, it is an electronic circuit which has one or more than one input and only one output. Logic circuits include devices such as registers, computer memory, arithmetic logic units (ALUs), complete microprocessors, which may contain more than 100 million gates, etc. 

Logic gate is the main basis of Digital electronics. Electronic circuits are the combination of different logic gates. All the electronic devices like computers, mobile phones, tab, digital cameras, television, micro oven, washing machine, robot, medical instruments etc are digital devices. These digital systems include logic gates like registers, encoder, decoder, adder, counter etc. to perform their function.

Digital devices in our daily life

We cannot deny that we are all connected to digital technology in any way. In every step of life, we are using digital equipment. They are telephone, mobile phone, television, computer, smartwatch, tablet, digital camera, etc. Now a day’s our life is useless without all these technologies. In education, business, communication, banking activities, online shopping, medical treatment, state activities, etc. we are using digital technology widely.  

Part – 3 : Index of Digital Device

  1. What is logic gate?
  2. What is logic OR gate?
  3. Logic AND gate
  4. Logic NOT gate