parity bit - EMACS at CO - Buzzpoints App

Question

“Space” and “mark” are rarely-used opposite options for this feature in the RS-232 communication standard. When asked why he didn’t include this feature on the CDC 6600, Seymour Cray supposedly said that this feature “is for farmers”. In a common UART (“YOU-art”) configuration called 8N1, the “N” means that this feature is not used. This feature is not used in RAID levels 0 through 2, but RAID 4 implements this feature with a dedicated disk, and RAID 5 (-5[1])distributes it across all the disks. (-5[1])This feature can be viewed as an instance of CRC with the generator polynomial (*) x plus 1. Like the more advanced ECC RAM, RAM that implements this feature would contain (10[1])nine memory chips instead of eight. This feature can detect single bit flips, but not double bit flips. For 10 points, name this simple error detection feature, which adds an extra bit (-5[1])to binary data indicating whether the number of ones is even or odd. ■END■ (10[3])

ANSWER: parity bit [accept check bit; prompt on “checksum” before “extra bit” and accept afterwards; prompt on “error detecting codes” before “error detection”; reject “error correction”; reject “duplication” or “redundancy”]

<AW>

= Average correct buzz position

Conv. %	Power %	Average Buzz
100%	0%	146.50

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Buzzes

Player	Team	Opponent	Buzz Position	Value
Vishwa Shanmugam	Macro Editors	Dianetics for Diabetics	76	-5
Dan Ni	playing emacs while my parents are arguing	We Bought a Complexity Zoo Story	82	-5
Ashvin Srivatsa	Eight Megabytes And Constantly Swapping	a neural-net processor; a thinking machine	112	10
Rahul Keyal	Edwardian Manifestation of All Colonial Sins	screaming into the public static void main(String[] args)	144	-5
Seth Ebner	Dianetics for Diabetics	Macro Editors	158	10
Swapnil Garg	We Bought a Complexity Zoo Story	playing emacs while my parents are arguing	158	10
Henry Cafaro	screaming into the public static void main(String[] args)	Edwardian Manifestation of All Colonial Sins	158	10