Computer Tech Info

 Mainframe computer likes as a big centralized machine that contains the large memory, huge storage space, multiple high grade processors, so it has ultra processing power compare to standard computer systems. So, mainframe computer system’s importance is increasing for large scale organization, scientific research, consumer statistics, and census data, because it is capable to execute multiple complex programs concurrently at the ultra speed. Today, most eminent vendors of mainframe computers are IBM, Hitachi, Amdahl, and Unisys. UNIVAC I (UNIVersal Automatic Computer I) mainframe computers was first developed by J. Presper Eckert and John Mauchly in USA, in 1951. Z operating system is going to use with 64-bit O/S especially to IBM mainframe computer, and it is designed by IBM organization . Who Use Mainframe Computer? Mainframe computer is best platform to execute millions of transactions in every single second. So mainframe computers are using in the large scale organizati...

Modem full form is “ Modulator-Demodulator ” that means it has ability to modulates and demodulates analog carrier signals for encoding and decoding digital data for executing. Modem is a hardware networking device that helps to make connection with computer or other hardware components like as switch or router for linking to internet. Purpose of Modem Modems are using for performing both activities like as sending and receiving of the digital data in between with multiple computer systems. Then this data get transmit over the telephone lines with using V.92, to analog modems which helping out for converting those signals back to digital form for readable format to computer. Modem plays role as digital translator that helps to get all information signals from cable, fiber or telephone line and convert it into accessible form for your PCs. Types of Modem There are different types of modem which are going to use in computer networking ; below explain each one: Dial-Up Modem : ...

From this article, you will learn about how to search in PDF on Mac ; and at the end you will say that it is easier task and I can do it myself. Everyone love PDF format file to share on email, social media or other sources. If sometime you need to find out little content into your PDF then don’t take headaches because here we will explore about how to search for a word in a PDF file on Mac How to Search a Text in PDF on Mac using Preview? Preview is a Mac’s built-in utility that allows to keep handle PDF document and all images. And it also lets you to find an exact phrase or word with in your PDF document on Mac quickly and easily. Here’s how: Launch Preview and then open PDF. Next navigate to File > Edit > Find , otherwise open search toolbar in window by pressing < Command + F > to find a PDF on Mac. Further you have to put a certain word you wish to search in the field and that word will be highlighted in yellow color as following. How to Search Exact Phrase PDF on Ma...

It is very necessary to prevent deadlock in operating system before it can happen. So, system identifys every transaction before getting its execution, and ensures it doesn’t get to  deadlock problem . If, that time any transaction may occur deadlock issue, then it can’t get to execute its instructions. Deadlock Prevention Algorithms We have two  techniques to prevent the deadlock problem , such as:- Deadlock Prevention Schemes-  Wait Die Scheme and Wound Wait Scheme To Violate any One Condition from Four Conditions  (Mutual Exclusion, Hold and Wait, No Preemption, Circular Wait) Deadlock Prevention Schemes In deadlock prevention schemes , we implement the timestamp, and to get ensure that deadlock doesn’t happen that given as follows. Wait Die Scheme This scheme, transaction T1 fires to request for getting resource but that same resource held by the other transaction T2. Then two condition can be occurring such as: A).  TS (T1) < TS (T2), means that if T1 is...

From this article, we will explain you about  how to hide files and folders on Mac and Macbook . You can hide any files and folders on your Mac system without knowing sound technical skill. At the end, you will say that i can do it myself!! The main reason to  hide to files on mac  is for security. Mac’s safety itself, so that it work smoothly without any errors and bugs. Hidden files have service files to Mac’s operating system. Second reason is to make you stress – free. Invisible files on your Mac offer your system a clean and tidy appearance. How to Hide Files on Mac? In this section, we will guide you about how to hide single and multiple files and folders on your Mac computer with using 10 effective methods, you can use one of them. Let’s Get Starting!! Hide Files and Folders on Mac Using Terminal Terminal is a built-in app in your Mac and allows you  to hide files and folders  without requiring any passwords and usernames. This is most easy method; here’s...