উইন্ডোজের যে কৌশলগুলো সময় বাঁচাবে

অপারেটিং সিস্টেম উইন্ডোজ ৭ এবং এরপরের সংস্করণগুলোয় বিভিন্ন কাজ সহজে ও দ্রুত করতে কয়েকটি কৌশল প্রয়োগ করা যায়। তেমন কিছু কৌশল এখানে দেওয়া হলো—

নতুন ফোল্ডার তৈরি

উইন্ডোজ এক্সপ্লোরারে নতুন কোনো ফোল্ডার তৈরি করতে হলে ডান ক্লিক করে New চেপে আবার New Folder নির্বাচন করলে সেটি তৈরি হয়। কিন্তু চাইলেই নতুন যেকোনো ফোল্ডার তৈরি করতে পারেন একসঙ্গে Ctrl + Shift + N চেপেই।

অ্যাডমিনিস্ট্রেটর হয়ে খুলতে

কোনো প্রোগ্রামকে যদি অ্যাডমিনিস্ট্রেটর রাইটস দিয়ে খুলতে চান, তবে সেটিকে নির্বাচন করে কি-বোর্ড থেকে একসঙ্গে Ctrl + Shift + Enter চাপুন।

টাস্কবারে যেতে

কাজ করতে গিয়ে উইন্ডোজের টাস্কবারে যাওয়ার প্রয়োজন হলে কি-বোর্ড শর্টকাট Windows key + B একসঙ্গে চাপলে টাস্কবারে যেতে পারবেন। এবার ডান/বাম অ্যারো কি দিয়ে চলতি প্রোগ্রামকে নির্বাচন করতে পারবেন।

উইন্ডোকে সরাতে

একাধিক উইন্ডো নিয়ে কাজ করতে গেলে কখনো তাকে ডানে-বাঁয়ে সরানোর প্রয়োজন পড়তে পারে। এ জন্য কি-বোর্ডের Windows key-এর সঙ্গে Left/Right arrow কি চেপে উইন্ডোটি পর্দার সুবিধামতো জায়গায় নিয়ে যেতে পারবেন।

প্রোগ্রাম মিনিমাইজ করতে

একসঙ্গে অনেক প্রোগ্রাম বা উইন্ডো চালু আছে? সব কটি উইন্ডোকে একসঙ্গে মিনিমাইজ করতে চাইলে কি-বোর্ড থেকে Windows key + Home কি দুটি একসঙ্গে চাপুন। নিমেষেই চলতি সব উইন্ডো মিনিমাইজ হয়ে যাবে। সেই উইন্ডোগুলো রিস্টোর করতে চাইলে আবার Windows key + Home কি চাপতে হবে। আবার যদি সব উইন্ডো মিনিমাইজ করে ডেস্কটপে ফিরতে চান তবে কি-বোর্ড থেকে Windows key + D কি চাপুন। নির্দিষ্ট কোনো প্রোগ্রামকে মিনিমাইজ করতে চাইলে Windows key + Down arrow কি একসঙ্গে চাপুন।

টাস্কবারের প্রোগ্রাম খুলতে

টাস্কবারে পিন করে রাখা প্রোগ্রাম বা চলতি যেকোনো প্রোগ্রাম কি-বোর্ড দিয়ে খুলতে চাইলে প্রোগ্রামের অবস্থান জেনে নিয়ে কি-বোর্ড থেকে Windows key চেপে অবস্থানের নম্বরটি চাপতে হবে। ধরুন, টাস্কবারে মাইক্রোসফট ওয়ার্ড তিন নম্বরে অবস্থান করছে। তাহলে কি-বোর্ড থেকে Windows key + 3 একসঙ্গে চাপলে সেটি খুলে যাবে। এভাবে পর্যায়ক্রমে যে প্রোগ্রামের অবস্থান যত তাকে Windows key চেপে সেই সংখ্যাটি চাপলেই খুলে যাবে।

How to take a screenshot on any Android phone

No matter what phone you have, we'll help you figure out the easiest way to snap the screen.

Every Android phone is different, and so is taking screenshots with them. Even though Android 4 introduced simple screenshots for all with the handy power-and-volume-down-key combo, nailing it can still be tricky. That's why some phone makers have introduced new methods. We're here to help: Just find your Android phone on the list below to learn the various ways to snap, share, and save a screenshot.

Acer phones 

• Hold down the power and volume-down buttons for a couple of seconds. 
• Pull down the notification panel to reach quick settings and tap the Screenshot icon. 

Asus phones 

• Hold down the power and volume-down buttons for a couple of seconds. 
• Pull down the notification panel to reach quick settings and tap the Screenshot icon. 

HTC phones 

• HTC U series: Hold down the power and volume-down buttons for a couple of seconds. 
• HTC 10: Hold down the home and volume-down buttons OR hold down the power and volume-down buttons for a couple of seconds. 
• All other HTC phones: Hold down power and volume-down buttons for a couple of seconds. 

Huawei and Honor phones 

• Hold down the power and volume-down buttons for a couple of seconds. 
• Pull down the notification panel, switch to Shortcuts, and tap the Screenshot icon. 

Lenovo 

• Hold down the power and volume-down buttons for a couple of seconds. 
• Pull down the notification panel and tap the Screen Shot icon. 

LG phones 

• Hold down the power (located on the back of the phone) and the volume-down buttons for a couple of seconds. 
• Pull down the notification panel and tap the Capture+ icon. 

Motorola phones 

• Hold down the power and volume-down buttons for a couple of seconds. 

Nexus and Pixel phones 

• Hold down the power and volume-down buttons for a couple of seconds. 

Samsung phones 

• Galaxy S8: Hold down the power and volume-down buttons for a couple of seconds. 
• Galaxy S7 and earlier: Hold down the home and volume-down buttons for a couple of seconds. 

Sony phones 

• Hold down the power and volume-down buttons for a couple of seconds. 
• Hold down the power key until a screen appears and tap Take screenshot. 

ZTE phones 

• Hold down the power and volume-down buttons for a couple of seconds.

Mobile phone

A mobile phone is a portable telephone that can make and receive calls over a radio frequency link while the user is moving within a telephone service area. The radio frequency link establishes a connection to the switching systems of a mobile phone operator, which provides access to the public switched telephone network (PSTN). Modern mobile telephone services use a cellular network architecture, and, therefore, mobile telephones are often also called cellular telephones or cell phones. In addition to telephony, 2000s-era mobile phones support a variety of other services, such as text messaging, MMS, email, Internet access, short-range wireless communications (infrared, Bluetooth), business applications, gaming, and digital photography. Mobile phones which offer these and more general computing capabilities are referred to as smartphones.

The first handheld mobile phone was demonstrated by John F. Mitchell[1][2] and Martin Cooper of Motorola in 1973, using a handset weighing c. 2 kilograms (4.4 lbs).[3] In 1983, the DynaTAC 8000x was the first commercially available handheld mobile phone. From 1983 to 2014, worldwide mobile phone subscriptions grew to over seven billion, penetrating 100% of the global population and reaching even the bottom of the economic pyramid.[4] In first quarter of 2016, the top smartphone manufacturers were Samsung, Apple, and Huawei (and "[s]martphone sales represented 78 percent of total mobile phone sales").

Link: Wikipedia

Scanners

Scanners is a 1981 Canadian science-fiction horror film written and directed by David Cronenberg and starring Jennifer O'Neill, Steven Lack, Michael Ironside, and Patrick McGoohan. In the film, "scanners" are people with unusual telepathic and telekinetic powers. ConSec, a purveyor of weaponry and security systems, searches out scanners to use them for its own purposes. The film's plot concerns the attempt by Darryl Revok, a renegade scanner, to wage a war against ConSec. Another scanner, Cameron Vale, is dispatched by ConSec to stop Revok.

Link: Wikipedia

Photocopier

A photocopier (also known as a copier or copy machine) is a machine that makes paper copies of documents and other visual images quickly and cheaply. Most current photocopiers use a technology called xerography, a dry process that uses electrostatic charges on a light-sensitive photoreceptor to first attract and then transfer toner particles (a powder) onto paper in the form of an image. Heat, pressure or a combination of both is then used to fuse the toner onto the paper. (Copiers can also use other technologies such as ink jet, but xerography is standard for office copying.) Earlier versions included the Gestetner stencil duplicator, invented by David Gestetner in 1881.

Xerographic office photocopying was introduced by Xerox in 1959,[1] and it gradually replaced copies made by Verifax, Photostat, carbon paper, mimeograph machines, and other duplicating machines.

Photocopying is widely used in the business, education, and government sectors. While there have been predictions that photocopiers will eventually become obsolete as information workers increase their use of digital document creation, storage and distribution, and rely less on distributing actual pieces of paper, as of 2015, photocopiers continue to be widely used. In the 2010s, there is a convergence in some high-end machines between the roles of a photocopier, a fax machine, a scanner, and a computer network-connected printer into a multi-function printer. As of 2015, some high-end machines can copy and print in color.

Link: Wikipedia

Computer

A computer is a device that can be instructed to carry out an arbitrary set of arithmetic or logical operations automatically. The ability of computers to follow generalized sequences of operations, called programs, enable them to perform a wide range of tasks.

Such computers are used as control systems for a very wide variety of industrial and consumer devices. This includes simple special purpose devices like microwave ovens and remote controls, factory devices such as industrial robots and computer assisted design, but also in general purpose devices like personal computers and mobile devices such as smartphones. The Internet is run on computers and it connects millions of other computers.

Since ancient times, simple manual devices like the abacus aided people in doing calculations. Early in the Industrial Revolution, some mechanical devices were built to automate long tedious tasks, such as guiding patterns for looms. More sophisticated electrical machines did specialized analog calculations in the early 20th century. The first digital electronic calculating machines were developed during World War II. The speed, power, and versatility of computers has increased continuously and dramatically since then.

Conventionally, a modern computer consists of at least one processing element, typically a central processing unit (CPU), and some form of memory. The processing element carries out arithmetic and logical operations, and a sequencing and control unit can change the order of operations in response to stored information. Peripheral devices include input devices (keyboards, mice, joystick, etc.), output devices (monitor screens, printers, etc.), and input/output devices that perform both functions (e.g., the 2000s-era touchscreen). Peripheral devices allow information to be retrieved from an external source and they enable the result of operations to be saved and retrieved.

Link: Wikipedia

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