Tech Savvy

Cache Memory is also known as SRAM (Static RAM). And I assume you the full form of RAM. So, why cache memory is used in Computer? Hmm, Nice question. As we know data is transferred from secondary memory to primary memory for making change in the file. And from primary memory it goes to the CPU via Bus for execution. CPU is so fast that the data transfer RAM become slow for the CPU. As result CPU remain idle most of the time. So, to optimize the usage of the CPU, cache memory was introduced. Cache memory is hardware memory which store the instructions that are executed frequently by the system. To understand the concept of cache memory? Let’s take an example:  Suppose, CPU is at Point A, Cache memory is at point B and RAM is at point C. So, who will require more time to reach to CPU? Point B or C? Obviously, B(Cache) because its closure to CPU. It will require less time to transfer data to the CPU.Because it is nearer to CPU. When a proce...

When you press a button on the PC to start the system. Many processes get invoke which make operating system run. So, what happens is when you press the power button immediately kernel present in main memory get invoke. Kernel is main part of the operating system. Kernel is the system code which work as translator between hardware and operating system. Imagine who you will use hard disk without operating system? Can you? In my opinion it’s not possible to interact with hard drive we need an OS. OS interact with kernel and kernel interact with hardware. SO, let’s get to the point as soon as the kernel get activated, it calls the OS file from drive into the ram. Note: To do anything with file of your hard drive it has to be call in RAM first where it can make change you want. As we know ROM (Read Only Memory) in hard drive we can only read memory that is why we require ram to execute any task on computer.   As the OS come into the RAM system boot ...

Modem: The word is made up of two words: “ Mo ” (modulation) and “D em ” (demodulation). The work of modem is to convert the digital signal coming from the connected devices(computer) into analog signal and visa-versa so that it can be transferred via telephone line. Now-a-days modem comes in built in the router so no one pay attention to it There are a couple of different modems, and the one that will work for your situation depends on the internet connection that you have. Cable  – Cable modems use coaxial cables. One end connects to the back of the modem and the other end connects to your wall or to the back of your cable box. Cable internet is considered to be “high speed” internet. DSL  – DSL can either connect to an external modem (like cable, but a different plug-in), or your computer will already have an internal modem that will dial-in through your phone line. Unlike dial-up, you can still access the in...

Router is device which forward data packets from the device to the internet and bring the requested data packets from the internet to the device, accurately. Router is the gateway of the internet . Router is used for the purpose of splitting the signal to share it, with more then one devices at the same time. To understand the concept of the router ? How it works? Let’s take an example, suppose you have to post a letter to your friend living in Delhi. For that you have to mention postal address in the letter. And post in the post box. From the post box it goes to the nearest post office from their it goes to nearest post office of the mentioned postal address. Now post office send this letter to the destination. Now, in this example consider letter as “ data packets ” and postal address as “ IP address ”, post office as “ router ”. Imagine the same scenario what will happen: When you request for some on internet data packet is send to the router with...

As we known after the launch of JIO telecom industry has been boost up 3X time in the past 2 year. As new competitor arrived prize of data plan reduced 80%. The Indian government liberalised the telecom sector as per the National Telecom Policy in 1994, under which licences were given in accordance to the Indian Telegraph Act, 1885. Under this century-old law, telcos are required to pay a fixed annual licence fee for licences granted to them. Since fixed licence fee was high, telcos often defaulted on their payments. The government in 1999 announced the National Telecom Policy, which gave these companies an option to migrate from fixed licence fee to revenue sharing fee. As per the new policy, 15 per cent AGR was fixed as a licence fee under the revenue-sharing model, which was later reduced to 13 per cent and then 8 per cent in 2013. Telecom companies owe Rs 1.47 lakh crore to the DoT, including Rs 92,600 crore as licence fee and Rs 55,100 crore as spectrum usage ch...

As we know bitcoin was created to keep user information private. But as the time pass people discovered that bitcoin isn’t as anonymous as most of the user think. So, to improve Bitcoin anonymity, bitcoin mixer service is created. How this service works? Let’s take an example assume you want to make banana milk shake. For making milk shake, firstly you have to cut banana into small pieces and then put it into mixer and add some milk into it, next start the mixer after minute milkshake is ready. Now you can’t differentiate banana and milk. Similar happen in bitcoin mixer. Banana are your bitcoin and milk is other user’s bitcoin who uses bitcoin mixer and banana milkshake is the output of mixer, where you can’t differentiate your bitcoin and other user’s bitcoin. In short, Bitcoin mixing service breakdown your bitcoin into smaller, different parts. Next they mix them up with coin from other address is that third parties will find extremely difficu...

Bitcoin is not entirely anonymous. Each user has public address that can be tracked theoretically, through proper network analysis.       Bitcoin are stored in wallet and wallet have your personal data. When we transfer bitcoin, a message is broadcast In public about the transaction, we declare that bitcoin in been exchange so that miner can confirm our transaction and put it in the bitcoin blockchain network. This data is publicly broadcast and permanently stored on the bitcoin blockchain which has the address from where it came from and amount transfer. Using this hacker can reach to your wallet and get all personal detail, amount of bitcoin you have, and also have access to see your future transaction. To remain private though, this thing bitcoin mixing was introduced. How bitcoin mixer works? How it maintains our privacy? That will be explained in the next blog. Thanks for reading the content. If you like the content share it...