Axiom Computer

The purpose of CCTV cameras is to deter criminals and warn of potential threats. CCTV technology began in the early 20th century. The first CCTV system was developed by Leon Theremin in 1927. But it wasn't until 1942 that the first documented use of CCTV was done, primarily for military use.

saif islam

মসজিদে ছাত্রশিবিরের কোরআন শিক্ষা পোগ্রামে ছাত্রদলের হামলা আহত ১০