Useful tips for everyday
What is full order state observer? An observer is a dynamic system that is used to estimate the state of a system or some of…
Do magnetic locks work without electricity? Magnetic or “Mag” Locks Mag locks are electromagnetic door locking devices. Because mag locks by design require a constant…
Is there such thing as ” if ” or ” case ” in soql? Yes as Jerry said in salesforce there is no such thing…
Can I use my iPad for presentations? With the iPad I can nearly always get online. But the iPad isn’t convenient only for attending conferences.…
How many ports are available in pic18f4580 device? It has total 40 pins. Out of these 40 pins, 34 pins can be used as input…
Why is reverse current bad? When reverse polarity occurs, the flow of electrons (wrong direction) are causing the gates to turn on/off with the opposite…
Can you shape a tree as it grows? Pruning helps trees grow strong and look neat and attractive. One prunes a tree to remove damaged…
How to fix GPG no public key no _ pubkey error during APT? W: GPG error: http://debian.uchicago.edu etch Release: The following signatures couldn’t be verified…
How to boot from the network with Grub? You should be familiar with rpm, tar, source packages compilation, and the configuration of network services, as…
What is power factor value? Power factor is defined as the ratio of the average power in an ac circuit to the apparent power, which…