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Q: In context of memory card, SD and MMC stands for-

  1. Secure Digital, Multimedia Card

  2. Secure Data, Memory Management Card

  3. Safe Data, Mega Memory Card

  4. Safe Digits, Multimedia Card

[ Option A ]

SD (Secure Digital, launch in the year 1999 by Panasonic, Toshiba, SanDisk), a type of non-volatile memory card used in cameras, mobiles, laptops, etc. The term "Secure Digital" refers to the original purpose, providing secure, portable storage for digital devices.

MMC (Multimedia Card, launch in the year 1997 by Siemens & SanDisk), an older memory card standard developed before SD cards. These are similar in size, but slower and less secure compared to SD.

  • SD stands for Secure Digital, which is modern, secure, and widely used in devices like cameras, smartphones, and laptops. On the other hand, MMC stands for Multimedia Card, which is an older standard with limited speed and storage, and is now mostly replaced by SD cards.

Q: Which of the following are line printer and page printer respectively?

  1. Laser Printer, Dot-Matrix Printer

  2. Drum Printer, Band Printer

  3. Drum Printer, Laser Printer

  4. Laser Printer, Chain Printer

[ Option C ]

A printer is an output device that produces a hard copy of text, images, or graphics from a computer or other digital devices. Printers are classified based on the mechanism used to print, speed, and quality of output.

1. Impact Printers, print by physically striking an ink ribbon against the paper.
2. Non-Impact Printers, print without physically striking the paper, using heat, laser, or ink.
3. 3D Printers, create three-dimensional objects by layering material according to a digital model.
4. Multifunction Printers (MFPs), combine printing, scanning, copying, and sometimes faxing into a single device.

CategoryDefinitionTypeDescription
Impact PrintersPrint by physically striking an ink ribbon against the paper.Dot Matrix PrinterUses pins to strike ribbon; prints text / graphics; good for multi-part forms.
Daisy Wheel PrinterCharacters embossed on a wheel; prints letter-quality text.
Line PrintersPrints one entire line at a time; high-speed printing.
Non-Impact PrintersPrint without physically striking the paper; uses ink, laser, or heat.Laser PrinterUses laser beams and toner; prints a full page; high-quality output.
Inkjet PrinterSprays tiny ink droplets; high-resolution; suitable for images.
Thermal PrinterUses heat to transfer ink or burn images; used for receipts/labels.
3D PrintersCreate 3D objects layer by layer from digital models.3D PrintersBuilds objects layer by layer using plastic, resin, or metal.
Multifunction Printers (MFPs)Combine printing, scanning, copying, and sometimes faxing in one device.MFPsAll-in-one devices for office / home use; save space and cost.

 

Q: Which of the following is used by banking industry to handle large volume of cheques?

  1. Digitizer

  2. MICR

  3. Barcode Reader

  4. Captcha

[ Option B ]

MICR : Magnetic Ink Character Recognition

  • Special technology used in banking to process cheques quickly and accurately.
  • The numbers at the bottom of cheques are printed using magnetic ink, which can be read by MICR readers even if the cheque is slightly damaged. This ensures fast and error-free processing of financial transactions.

Digitizer : Converts drawings or images into digital form. It is commonly used in graphic design and CAD (Computer-Aided Design) applications.

Barcode Reader (BCR) : Reads barcodes on products. It helps in fast product identification and inventory management in stores and warehouses.

Captcha : Used to verify human users online, not for banking. It prevents automated bots from accessing websites and submitting forms.

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