what is the purposes of CCTV camera and Introduction

There are still people who talk about CCTV without realizing what the initials stand for – Closed Circuit Television. So what exactly is this system of surveillance and security .

Quite simply it is exactly as the name implies – a system in which the circuit is closed and all the elements are directly connected, including those linked by microwave, infra-red beams and so on. This is what makes it different from broadcast television, which enables any correctly tuned receiver to pick up the signal from the airwaves.

While the most common use of government establishments, hospitals, banks and suchlike, and

You may not be aware of it, but every bank cash machine in the country uses CCTV to record you making your cash transaction.

CCTV is commonly used for a variety of purposes,

  • Maintaining perimeter security in medium- to high-secure areas and installations.
  • Observing behavior of incarcerated inmates and potentially dangerous patients in medical facilities.
  • Traffic monitoring.
  • Overseeing locations that would be hazardous to a human, for example, highly radioactive or toxic industrial environments.
  • Building and grounds security.
  • CCTV is providing security in retail shops
  • CCTV Surveillance security System with regard to traffic, crowds, airports etc…

CCTV is finding increasing use in law-enforcement, for everything from traffic observation (and automated ticketing) to observation of high-crime areas or neighborhoods. CCTV is one part of the solution, and not a panacea for public safety and security; Improve public perception of safety; Deter and displace anti-social behaviour …

How to My Computer Speed Increases

Get rid of unwanted programs
Speed increases don’t end with startup times. You’ll want to make sure that your computer is running fast when you’re using it, too. Free up storage space and memory by uninstalling programs that you don’t use. These may include trial versions of software that came with the computer when you bought it, out-of-date antivirus programs, old software or games that you no longer play. Click Start > Control Panel > Uninstall a program. From the list of programs that appears, click the program you want to uninstall, then click Uninstall.
Remove temporary files
Windows’ Disk Clean-up utility can help boost your computer’s performance by removing temporary files and unnecessary system files: Click Start. In the search box, type disk clean up and, from the list of results that appears, click Disk Clean-up. In the list of Drives, click the hard disk drive that you want to clean. For most people this will be the C: drive. Click OK. the Disk Clean-up box, select the type of files that you want to delete and then click OK and then click Delete files.

How to Speed Up Slow-Running Computers

Your PC is running slow because something is using up those resources. If it’s suddenly running slower, a runaway process might be using 99% of your CPU resources, for example. Or, an application might be experiencing a memory leak and using a large amount of memory, causing your PC to swap to disk. Alternately, an application might be using the disk a lot, causing other applications to slow down when they need to load data from or save it to the disk.

To find out, open the Task Manager. You can right-click your taskbar and select the “Task Manager” option or press Ctrl+Shift+Escape to open it. On Windows 8, 8.1, and 10, the new task manager  provides an upgraded interface that color-codes applications using a lot of resources. Click the “CPU,” “Memory,” and “Disk” headers to sort the list by the applications using the most resources. If any application is using too much resources, you might want to close it normally — if you can’t, select it here and click “End Task” to force it to close.

How To Tell If Your Hard Drive is Failing

A bad hard drive can cause an assortment of different issues on your computer. Below are just a few of the possible issues you may encounter. It is important to remember that the below issues can also be caused by more than just a bad disk drive.

  • Errors when reading, copying, moving, or deleting data on the computer.
  • Extremely slow.
  • Operating system unable to boot.
  • Other random errors or computer reboots.

     

    Replace the hard drive

     If the hard drive appears to be bad or is generating SMART errors indicating its bad even after trying the above suggestions, we suggest replacing it.  Often hard drives have a several year warranty and if the drive or the computer the drive is in is relatively new, it may still be under warranty (even if the computer isn’t).If you’re concerned about recovering lost data from a defective drive consider using a company who specializes in data recovery.

 

 

Way you Desktop still need

With a desktop PC, you don’t have to shell out for a brand new PC just because you’re RAM or disk storage requirements have increased. Bought a NAS equipped with 10GbE support for your growing business? Install a 10GbE network adapter to take advantage of your new storage device. Looking for a speedy storage subsystem to gain the maximum benefit from your souped-up network storage? Add a fast solid-state drive or even a RAID 5 volume if there is sufficient space in your desktop chassis. And if there’s not, you can upgrade to a bigger chassis.

You can easily upgrade a desktop PC as your needs increase.