World Of Information & Technology

Pakistan Telecommunications Company Limited (PTCL) has launched an exciting offer for its Vfone customers, enabling them to avail free balance of Rs. 1000. The offer has been specially launched for customers, who have not recharged their account since Aug 10, 2012. Customers can avail this service by calling or sending a SMS at 7711....

Warid Telecom brings another fascinating service for its customers; Postpaid To Prepaid Balance Transfer, claimed to be the industry first service by the operator. This service will allow Warid Telecom’s postpaid customers to share balance with Warid prepaid and Glow customers. Commenting on this new offer, Warid Telecom’s Chief Commercial...

Government of Pakistan, through Pakistan Telecommunication Authority, is likely to direct telecom companies in Pakistan to suspend mobile phone and wireless services on Friday and Saturday due to security situation on the occasion of 12th Rabiul Awwal. Unconfirmed reports suggest that services will remain suspended from...

This project describes how to build an IR remote control extender / repeater to control your electronic appliances from a remote location. An IR detector module receives IR signal from remote control and two IR leds are re-emitting the signal to the appliance. You can place the IR emitting leds close to the device you would like to...

Circuit Notes   The MPF102 (Q1) can be replaced with a NTE451 or ECG451, but still widely available. JFET-N-CHAN, UHF/VHF AMPThe 2N3565 (Q1/Q2) can be replace with a 2N2222(A), BC107, BC108, BC109(A/B/C), NTE123A, or ECG123A.The TIP31 (Q3) can be replaced with a NTE196 or ECG196, but is a common type and widely available.NO...

Introduction: Last week I had a big flood in my house. A water tube broke in the middle of the night making lots of damage. Wooden floor, furniture, small electronic appliances, all damaged due to the water. This made me think on a project that would sense water on the floor and trigger an alarm. The detector should be able to sense...

Since iButton DS1990A introduced in market from Dallas Semiconductor (MAXIM), it has been used in many applications concerning security, access control systems etc. In this project we will use iButton as a key to an electronic lock. This electronic lock can use many different kinds of iButtons and can store up to 9 different keys. One...