''TECHNICAL KING'' is the place where you can take all types of Technical devices information completely. If you are searching for technical device than this Blog is for you...
Memory
Printers📼
Printers
Printer is an output device, which is used to print information on paper.
There are two types of printers -
1. Impact Printers
2. Non-Impact Printers
1. Impact Printers
Impact printers print the characters by striking them on the ribbon, which is then pressed on the paper.
Characteristics of Impact Printers are the following −
▫️Very low consumable costs
▫️Very noisy
▫️Useful for bulk printing due to low cost
➡️There is physical contact with the paper to produce an image
These printers are of two types −
1. Character printers
2. Line printers
1. Character Printers
Character printers are the printers which print one character at a time.
These are further divided into two types:
Dot Matrix Printer(DMP)
Daisy Wheel
Dot Matrix Printer
In the market, one of the most popular printers is Dot Matrix Printer. These printers are popular because of their ease of printing and economical price. Each character printed is in the form of pattern of dots and head consists of a Matrix of Pins of size (5*7, 7*9, 9*7 or 9*9) which come out to form a character which is why it is called Dot Matrix Printer.
Advantages
▫️Inexpensive
▫️Widely Used
▫️Other language characters can be printed
Disadvantages
▪️Slow Speed
▪️Poor Quality
Daisy Wheel
Head is lying on a wheel and pins corresponding to characters are like petals of Daisy (flower) which is why it is called Daisy Wheel Printer. These printers are generally used for word-processing in offices that require a few letters to be sent here and there with very nice quality.
Advantages
▫️More reliable than DMP
▫️Better quality
▫️Fonts of character can be easily changed
Disadvantages
▪️Slower than DMP
▪️Noisy
▪️More expensive than DMP
2. Line Printers
Line printers are the printers which print one line at a time.
These are of two types −
Drum Printer
Chain Printer
Drum Printer
This printer is like a drum in shape hence it is called drum printer. The surface of the drum is divided into a number of tracks. Total tracks are equal to the size of the paper, i.e. for a paper width of 132 characters, drum will have 132 tracks. A character set is embossed on the track. Different character sets available in the market are 48 character set, 64 and 96 characters set. One rotation of drum prints one line. Drum printers are fast in speed and can print 300 to 2000 lines per minute.
Advantages
▫️Very high speed
Disadvantages
▪️Very expensive
▪️Characters fonts cannot be changed
Chain Printer
In this printer, a chain of character sets is used, hence it is called Chain Printer. A standard character set may have 48, 64, or 96 characters.
Advantages
▫️Character fonts can easily be changed.
▫️Different languages can be used with the same printer.
Disadvantages
▪️Noisy
2. Non-impact Printers
Non-impact printers print the characters without using the ribbon. These printers print a complete page at a time, thus they are also called as Page Printers.
These printers are of two types −
1. Laser Printers
2. Inkjet Printers
Laser Printers
These are non-impact page printers. They use laser lights to produce the dots needed to form the characters to be printed on a page.
Advantages
▫️Very high speed
▫️Very high quality output
▫️Good graphics quality
▫️Supports many fonts and different character size
Disadvantages
▪️Expensive
▪️Cannot be used to produce multiple copies of a document in a single printing
Inkjet Printers
Inkjet printers are non-impact character printers based on a relatively new technology. They print characters by spraying small drops of ink onto paper. Inkjet printers produce high quality output with presentable features.
They make less noise because no hammering is done and these have many styles of printing modes available. Color printing is also possible. Some models of Inkjet printers can produce multiple copies of printing also.
Advantages
▫️High quality printing
▫️More reliable
Disadvantages
▪️Expensive as the cost per page is high
▪️Slow as compared to laser printer
Monitors🖥
Monitors
▫️Monitors, commonly called as Visual Display Unit(VDU), are the main output device of a computer. It forms images from tiny dots, called pixels that are arranged in a rectangular form. The sharpness of the image depends upon the number of pixels.
▫️There are two kinds of viewing screen used for monitors.⤵️
- 1.Cathode-Ray Tube (CRT)
- 2.Flat-Panel Display
1.Cathode-Ray Tube (CRT) Monitor
▫️The CRT display is made up of small picture elements called pixels. The smaller the pixels, the better the image clarity or resolution. It takes more than one illuminated pixel to form a whole character, such as the letter ‘e’ in the word help.
▫️A finite number of characters can be displayed on a screen at once. The screen can be divided into a series of character boxes - fixed location on the screen where a standard character can be placed. Most screens are capable of displaying 80 characters of data horizontally and 25 lines vertically.
▫️There are some disadvantages of CRT −
- 🔹️Large in Size
- 🔹️High power consumption
2.Flat-Panel Display Monitor
▫️The flat-panel display refers to a class of video devices that have reduced volume, weight and power requirement in comparison to the CRT. You can hang them on walls or wear them on your wrists. Current uses of flat-panel displays include calculators, video games, monitors, laptop computer, and graphics display.
▫️The flat-panel display is divided into two categories −
🔸️Emissive Displays − Emissive displays are devices that convert electrical energy into light. For example, plasma panel and LED (Light-Emitting Diodes).
🔸️Non-Emissive Displays − Non-emissive displays use optical effects to convert sunlight or light from some other source into graphics patterns. For example, LCD (Liquid-Crystal Device).
Thank you.
CPU 🎚
Central Processing Unit
The computer's central processing unit (CPU) is the portion of a computer that retrieves and executes instructions. The CPU is essentially the brain of a CAD system. It consists of an arithmetic and logic unit (ALU), a control unit, and various registers. The CPU is often simply referred to as the processor.
➡️Central Processing Unit (CPU) consists of the following features −
🔸️CPU is considered as the brain of the computer.
🔸️CPU performs all types of data processing operations.
🔸️It stores data, intermediate results, and instructions (program).
🔸️It controls the operation of all parts of the computer.
➡️CPU itself has following three components.
🔶️Memory or Storage Unit
🔶️Control Unit
🔶️ALU(Arithmetic Logic Unit)
Memory or Storage Unit
This unit can store instructions, data, and intermediate results. This unit supplies information to other units of the computer when needed. It is also known as internal storage unit or the main memory or the primary storage or Random Access Memory (RAM).
Its size affects speed, power, and capability. Primary memory and secondary memory are two types of memories in the computer.
Functions of the memory unit are −
▫️It stores all the data and the instructions required for processing.
▫️It stores intermediate results of processing.
▫️It stores the final results of processing before these results are released to an output device.
▫️All inputs and outputs are transmitted through the main memory.
Control Unit
This unit controls the operations of all parts of the computer but does not carry out any actual data processing operations.
Functions of this unit are −
▫️It is responsible for controlling the transfer of data and instructions among other units of a computer.
▫️It manages and coordinates all the units of the computer.
▫️It obtains the instructions from the memory, interprets them, and directs the operation of the computer.
▫️It communicates with Input/Output devices for transfer of data or results from storage.
▫️It does not process or store data.
ALU (Arithmetic Logic Unit)
This unit consists of two subsections namely,
◽Arithmetic Section
◽Logic Section
Arithmetic Section
Function of arithmetic section is to perform arithmetic operations like addition, subtraction, multiplication, and division. All complex operations are done by making repetitive use of the above operations.
Logic Section
Function of logic section is to perform logic operations such as comparing, selecting, matching, and merging of data.
Thank you.
Types of Keyboard ⌨
Types of keyboards
1. Flexible keyboard:
2. Ergonomic Keyboard:
3. Wireless Keyboard:
4. Mechanical Keyboard:
5. Virtual Keyboard:
Examples of virtual keyboards
7. Gaming Keyboard:
Thank You.🙃
Invention of Keyboard♒
Invention of the first keyboard
There were different types of invention, as well as the typewriter, keypunches, and teleprinters that helped to develop the computer keyboard. In the 1700s, the first writing devices were designed, and Henry Mills filed patented in London, England, in 1714.
Invention of the typewriter
The different typing and writing devices were created around the world in the late 1700s and the beginning of the 1800s. Although, in 1868, Christopher Sholes developed and patented the first practical typewriter and the word Type-Writer that is considered to be the first typewriter.
Additionally, the QWERTY keyboard design was introduced by the Type-Writer, which is still
mainly used on US keyboards today. Samuel W. Soule, Christopher Sholes, and Carlos Glidden created a Type-Writer that picture shown in the below:
In 1878, the first keyboard with a Shift key was invented that had one Shift key on the left side of the keyboard. The Underwood typewriter is considered the first successful modern typewriter, till 1939, five million of its typewriters were sold. The first Underwood typewriter was invented by Franz Xaver Wagner, and on 27 April 1893, he filed to patent the typewriter U.S. patent 523,698. The biggest improvement of Underwood typewriter, it was capable of seeing the writing it was typed. Later in 1895, Franz Xaver Wagner created the Underwood company with the help of John Underwood and introduced its first typewriter in 1896.
Before introducing the IBM Selectric typewriter by IBM on 27 July 1961, typewriters from all manufacturers began to become more alike. Unlike other typewriters, the IBM Selectric typewriter used a typeball, which containing characters that would strike an ink ribbon. Furthermore, this typewriter was sold more than 13 million until 1986.
The invention of keypunch, the telegraph, and teleprinter
Joseph Marie Jacquard developed the Jacquard Loom in the late 1700s, which was expanded by Herman Hollerith with his keypunch inventions in the late 1800s and the beginning of the 1900s.
In 1832, Pavel Schilling invented the first electrical telegraph and to send Morse code messages over a line, allowing for a single key to be used. Later in 1846, a printing telegraph was patented by Royal Earl House, which used 28 piano-style keys. The keys made it easy to send messages by representing each letter in the alphabet. In 1874, the Baudot code was invented by Emile Baudot; later, it was extended by Donald Murray (inventor of thetelegraphic typewriter). Charles Krum helped invent the teleprinter by working to continue on Frank Pearne that was developed from 1902 to 1918. In August 1907, he filed patent U.S. patent 862,402. Also, he filed patent 888,335 in May 1908, and patent 1,286,351 in May 1910.
Early computers with keyboards
After many years, in 1964, the introduction of Multics and video display terminals (VDTs), which enabled users to see typing on the screen what they are typing.
The DataPoint 3300 began to ship by the Computer Terminal Corporation in 1969. It was the first computer terminal designed to replace the teleprinter. Some other versions of this terminal were also introduced as well as HP 2600A, DEC, and VT06. The DataPoint 3300 was a terminal that was able to move the cursor using arrow keys, and it used a screen display to show typed text. Also, it had the ability to clear all text on the screen.
At the beginning of the 1970s, keyboards began to use what we use today. Those keyboards were heavy mechanical or reconstructed electric typewriters from companies such as IBM. Apple, Radio Shack, and Commodore introduced their computers in the late 1970s that come included keyboards. Later, IBM PC and the Model F keyboard introduced by IBM in August 1981.
The Model M keyboard was introduced by IBM in 1986, which contained function keys like today's keyboards have across the top of the keyboard. The Model M is still considered a high keyboard as it has a standard US layout with 101-key, which is used for full-sized keyboards today. It is also designed for windows keyboards that have 104-key with the Menu keys and windows keys.
Since IBM introduced the Model M keyboard, many changes have been in the keyboard that is in use today. A membrane helps to manufacturer computer keyboards easily and reduce manufacturing costs. Furthermore, the membrane keyboard makes the keyboard lighter, thinner, and quieter as compared to the first mechanical keyboards.
← PrevNext →
Thank you.
What Is Keyboard ?
KEYBOARD
Thank you.
Computer🖥️
COMPUTER
Topic's are covered in this BLOG👇
Computer overview
History of the computer
How are computers used today?
What components make up a desktop computer?
What parts are needed for a computer to work?
Computer connections
Types of computers
Who makes computers?
Thank You🙂
What Is Laptop💻
What is a laptop?
A laptop, sometimes called a notebook computer by manufacturers, is a battery- or AC-powered personal computer (PC) smaller than a briefcase. A laptop can be easily transported and used in temporary spaces such as on airplanes, in libraries, temporary offices and at meetings.
A laptop can be turned into a desktop computer with a docking station, which is a hardware frame that supplies connections for peripheral input/output devices such as a monitor, keyboard and printer.
Watch About Laptop⬆️
Types of laptops
Differences in these core components are what distinguish laptop computers. Some core characteristics of laptops are the following:
Size.
Screen resolution.
Higher resolution liquid crystal display or LCD screens display sharper graphics and increase the usable viewing area. High pixel density displays are becoming increasingly popular.
Processing power.
Laptop processors have two, four or eight cores and, because of that, vary in performance.
Memory.
Typically, laptop random access memory (RAM) is 4, 8 or 16 GB. The most common RAM is 8 GB, and memory is often soldered to the motherboard.
Input.
Laptops often have a built-in microphone, video camera and various input ports, such as Lightning, HDMI and USB ports. Some companies have gradually reduced the number of ports on the laptop body. Laptops use several different approaches for integrating a mouse into the keyboard, including touch pads, trackballs and pointing sticks.
Durability.
Laptops vary in durability; some are designed for use in rugged conditions.
Design.
Laptop designs and accompanying marketing terms vary. Notebooks, netbooks and subnotebook types denote different laptop sizes. New laptops, such as hybrid and convertible ones, feature displays that detach from the computer and function as touchscreen tablets.
Accessories.
Various laptop accessories -- such as a detachable keyboard or a second touchpad -- can influence purchasing decisions.
Battery life.
Laptops are battery-powered, as well as having power adapters to plug into a power source. Batteries vary among laptops, and battery life can also influence buyers.
5 Things to Consider When Buying Headphones🎧
5 Things to Consider When Buying Headphones 🎧
1. Would Wired or Wireless Be Better?
2. Do You Care About Bass and Treble Balance?
3. What Style Feels Most Comfortable?
4. Are Looks or Brand Important?
5. What is Your Budget?
What are the 9 most question that you should ask when you buy a new smartphone !!
9 Questions You Need To Ask When Buying a New Mobile Phone📲
.png)
1. What Do I Use My Phone For?
2. How Much Should I Spend On a Phone?
3. How Much Data Do I Need On My Phone?
4. What’s The Best Phone For My Teenager?
5. Is This Phone Easy To Use?
6. Should I Buy The Phone Outright or On a Plan?
7. What Is The Camera Quality?
8. How Much Storage Does The Phone Have?
9. What Is The Reception And Coverage Like?
Thank you For Visit🙂
Galaxy S21 FE 5G
KEY FEATURES :-
Smooth scrolling
The 120Hz display technology delivers a super smooth scroll, with optimized refresh rate, and a fast touch response gives seamless visuals in both work and play.
Real display vision
The high quality display with Dynamic AMOLED 2X delivers vibrant color and brightness, even in bright sunlight.
Pro-grade Camera
The powerful pro-grade camera delivers high-quality photos and videos, with a Rear Camera that boasts 12MP Ultra Wide, Wide-angle cameras and a 8MP Telephoto Camera. It also features a Front Camera that includes a 32MP Selfie camera.
30X Space Zoom
30x Space Zoom combines a 3x Hybrid Optic Zoom and 30x digital zoom for high resolution close ups, while the Engage Zoom Lock reduces shakiness the further you zoom in.1
Superior performance
The power-efficient processor chip offers reliability and performance that boosts every experience, from graphic-heavy gaming to multitasking.
All-day Intelligent power
The 4500mAh intelligent battery outlast the day even on 5G, while Super Fast Charging can charge 50% in 30 minutes.
truke Buds Q1 Bluetooth Truly Wireless in Ear Earbuds with mic, 60H Playtime and Fast Charge, Environmental Noise Cancellation(ENC), AAC Codec, Dedicated Gaming Mode, BT 5.1, IPX4 (Black)
Features
Specifications
[Quad Mic with ENC]: truke Buds Q1 comes with Dual-Mic in each earbud and Environmental Noise Cancellation technology. Enjoy a Rich Calling Experience. These Bluetooth Earbuds are equipped with power-efficient Bluetooth v5.1 that supports low power consumption, superior connectivity and compatible with all Android, Windows & IOS devices.
[10hrs Playtime Single Charge]: truke Bassbuds Q1 TWS offers a Playtime of up to 10hours on single charge. Get an additional playtime of up to 50hours using 400mAh Charging Case. Making a total of up to 60hours of playtime.Inline Remote:No
[Tap to Control]: Enjoy easy access to Answer Call or Change Music tracks using Touch Control of these Wireless Earbuds. Tap 2 times of left earbuds to access your preferred Google voice assistant or Apple Siri.
[Low Latency 85ms]: Enjoy a best Gaming experience with Dedicated Gaming Mode and low latency of up to 85ms with SBC Codec. Tap 3 times of right earpods to enter Gaming Mode.
[Powerful Deep Bass]: Experience Deep Bass and Powerful Music with 10mm Real Copper Driver Speakers powered by AAC Codec support on your truke Q1 Headphone.
[6 Months Warranty]: truke Buds Q1 Truly Wireless Earphones with Mic come with 6 Months Warranty from date of purchase. Mandatory registration is required on truke website within 10 days of purchase.
[Lightweight Secure Fit]: truke Buds Q1 weigh only 4 grams each, are designed for All Day Comfortable and Secure Fit Earphone.
[IPX4 Sweat Resistant]: With IPX4 water-resistant rating, these earphones are your best buddies to carry to your daily Gym sessions. Enrich your morning walks in the park with truke airpods.
.jpg)
.jpg)
.jpg)




















.webp)





.png)









