Generation Cell Phones

Generation I 
Stepping on the 1973's, Martin Cooper, a lady who came from Motorola Corp. discovered the first cell phone and he introduced its findings to the general community on April 3, 1973. Yes, the first generation of phones can be also called 1G. 1-G is the first phone that actually (in the sense as we see today or can be taken anywhere). The invention is able to change the world forever, the phone weighs 30 ounces or about 800 grams. However, the technology used 1-G mobile phones are still analog, or better known as AMPS. AMPS technology using a frequency of about 825 MHz s / d operated at 894 Mhz 800 Mhz band. But it can only be used in one area or region, as it still uses technology that is analog. Weighing 800 grams, it is not wrong if ukurang 1G phones are still too large to use hand-held manuasi, and that's one of the weaknesses of the 1G phones. Because these phones require power to run it and still have poor battery performance, then this causes a large space needed to install the battery and automatic cell size becomes large. Besides the generation 1-G still has problems with mobility users. When making a call, the user mobility is limited to coverage area of ​​cellular phones.

Microcontroller-based Infusion Bottle Monitoring using Wireless Communication

1.        The Title

 Microcontroller-based Infusion Bottle Monitoring using Wireless Communication

2.        Title Background

In this technological era, many people who create tools to facilitate human work and to create comfort for every joint of life, including health sector also require advances in technology to provide good service to patients. Sometimes the replacement of water infusion of the patient's family must notify the guard room that the water drip out. If on this night must be very inconvenient. Therefore, inspired by the tool "nurse call 'that already exist in each patient room, I try to create a detection system based on AVR microcontroller infusion patients.

Taking advantage of IC ATmega8535 microcontroller as the central controller and limit switches that function pressure sensor to create this system. Then, using wireless communication using RFM module 12B, the information that the infusion of water discharged can be sent directly to the guard room in the form of display on the PC. So that families do not have to bother to tell patients to keep the space that the water drip out.

What is Computer Network ?

Computer network can be interpreted as a series of two or more computers. These computers will be connected to each other by a communication system. With computer networks is possible for every computer that netted in it can be exchanged data, programs, and other computer resources such as storage media, printers, and others. Computer network that connects computers located at different locations can also be used to send electronic mail (e-mail), send data files (upload) and retrieve data files from other places (download), and various activities access to information on the location separately.
The main purpose of a computer network is resource sharing (read: the resources), in which a computer can utilize the resources of other computers that are in the same network.