In computer processors the carry flag (usually indicated as the C flag) is a single bit in a system status register/flag register used to indicate when an arithmetic carry or borrow has been generated out of the most significant arithmetic logic unit (ALU) bit position. The carry flag enables numbers larger than a single ALU width to be added/subtracted by carrying (adding) a binary digit from a partial addition/subtraction to the least significant bit position of a more significant word. This is typically programmed by the user of the processor on the assembly or machine code level, but can also happen internally in certain processors, via digital logic or microcode, where some processors have wider registers and arithmetic instructions than (combinatorial, or "physical") ALU. It is also used to extend bit shifts and rotates in a similar manner on many processors (sometimes done via a dedicated flag). For subtractive operations, two (opposite) conventions are employed as most machines set the carry flag on borrow while some machines (such as the 6502 and the PIC) instead reset the carry flag on borrow (and vice versa). (Wikipedia).
From playlist Week 0 2013
During WWI soldiers from opposing sides laid down their guns and celebrated Christmas together. Subscribe for more History: http://histv.co/SubscribeHistoryYT Check out exclusive HISTORY videos and full episodes: http://www.history.com/videos Get daily updates on history: http://www.his
From playlist Holidays: Christmas | History
Deconstructing History: American Flag | History
Why does the American flag have 13 stripes? Get all the facts and figures on "Old Glory." HISTORY®, now reaching more than 98 million homes, is the leading destination for award-winning original series and specials that connect viewers with history in an informative, immersive, and entert
From playlist HISTORY Celebrates the 4th of July
Bet You Didn't Know: Veterans Day | History
Do you know why Veterans Day is celebrated on November 11th every year? Get the whole story behind the holiday. #HistoryChannel Subscribe for more History: http://histv.co/SubscribeHistoryYT Check out exclusive HISTORY videos and full episodes: http://www.history.com/videos Get daily upd
From playlist History Celebrates Veteran's Day
The History of the Pledge of Allegiance | History
Take a look back at the origins of and history behind the customary salute to the American flag. Newsletter: https://www.history.com/newsletter Website - http://www.history.com Facebook - https://www.facebook.com/History Twitter - https://twitter.com/history HISTORY Topical Video Season
From playlist Examine the Past | History
Brad Meltzer's Lost History: What Happened to the Ground Zero Flag? | History
What happened to the flag hoisted at Ground Zero on September 11, 2001? Newsletter: https://www.history.com/newsletter Website - http://www.history.com Twitter - https://twitter.com/history/posts Facebook - https://www.facebook.com/History HISTORY Topical Video Season 1 Episode 1 Whethe
From playlist Remembering 9/11: Fifteen Years Later | History
Ex: Determine the Possible Number of 4 Color Striped Flags (Permutation)
This video explains how to find the number flags with 4 stripes of different colors. A permutation and the counting principle is used. Site: http://mathispower4u.com
From playlist Permutations and Combinations
In this video we program the microcode of the 8-bit breadboard computer so that it supports two conditional jump instructions: JC (jump carry) and JZ (jump zero). We also test out these new instructions and write several programs using them. Code from this video: https://github.com/beneat
From playlist Building an 8-bit breadboard computer!
Share your requests for future video topics here: https://www.reddit.com/r/beneater/comments/88m9jy/ben_eater_video_suggestions/ Intel x86 developers guide (4800 pages!): https://software.intel.com/sites/default/files/managed/39/c5/325462-sdm-vol-1-2abcd-3abcd.pdf#page=80 More 8-bit compu
From playlist Building an 8-bit breadboard computer!
ELEC2141 Digital Circuit Design - Lecture 25
ELEC2141 Week 9 Lecture 3: Arithmetic Circuits
From playlist ELEC2141 Digital Circuit Design
How assembly language loops work
More 6502: https://eater.net/6502 Support these videos on Patreon: https://www.patreon.com/beneater or https://eater.net/support for other ways to support. ------------------ Social media: Website: https://www.eater.net Twitter: https://twitter.com/ben_eater Patreon: https://patr
From playlist Build a 65c02-based computer from scratch
Top Shot - Recurve Bow | History
This ancient hunting weapon carries the same about of power as the long bow only in a smaller package. It's the only bow allowed in the Olympics and is still used by modern day hunters. HISTORY®, now reaching more than 98 million homes, is the leading destination for award-winning origina
From playlist Top Shot | History
NES Emulator Part #2: The CPU (6502 Implementation)
In this video I build a 6502 emulation in C++. I pay close attention to the instructions that can cause problems, ADC and SBC. Then I build a lightweight application to analyze running 6502 programs. Source: https://github.com/OneLoneCoder/olcNES YouTube: https://www.youtube.com/javidx9
From playlist NES Emulator From Scratch
GoGaRuCo 2014- Let's Build a Computer!
By, Ryan Davis The increasing accessibility of computing and scripting languages means more and more of us don't have computer science fundamentals and hand-wave our laptops and servers as magic. But, it doesn't take much to learn that the wizard box you type on every day is just layers of
From playlist GoGaRuCo2014-
The strange story of the NKVD 'Flag Disposal Regiment' and the Nazi flags thrown at the foot of Lenin's Mausoleum during the Moscow Victory Parade 1945. Visit my new audio book channel 'War Stories with Mark Felton': https://youtu.be/xszsAzbHcPE Help support my channel: https://www.paypa
From playlist History of Nazi Symbols
How Computers Calculate - the ALU: Crash Course Computer Science #5
Today we're going to talk about a fundamental part of all modern computers. The thing that basically everything else uses - the Arithmetic and Logic Unit (or the ALU). The ALU may not have to most exciting name, but it is the mathematical brain of a computer and is responsible for all the
From playlist Computer Science
Memorial Day: It's Never Too Late to Thank a Vet | History
American citizens send a special message to their loved ones for their military service. Subscribe for more History: http://histv.co/SubscribeHistoryYT Check out exclusive HISTORY videos and full episodes: http://www.history.com/videos Get daily updates on history: http://www.history.co
From playlist History Celebrates Memorial Day
Game Physics (in Assembler) - Computerphile
Just how do you turn basic number crunching into a physics system for gaming? Video Games programmer Matt Phillips explains. More info on Matt's Project: http://www.tanglewoodgame.com/info Matt's Kickstarter for Tanglewood: http://bit.ly/Computerphile_Tanglewood Thanks to The National V
From playlist Sega Megadrive Video Game Programming
Deconstructing History: Huey Helicopters in Vietnam | History
The UH-1 "Huey" helicopter became a symbol of U.S. combat forces in Vietnam. Subscribe for more History: http://histv.co/SubscribeHistoryYT Check out exclusive HISTORY videos and full episodes: http://www.history.com/videos Get daily updates on history: http://www.history.com/news/ Che
From playlist Presidents at War | History
Hitler's Blood Flag - The Mystery of the Blutfahne
What happened to the infamous 'Blood Flag', a Nazi relic kept in the Braun House in Munich. Was it destroyed by Allied bombing, looted by locals, taken as a souvenir by US troops? Discover the full story here. Help support my channel - see below for details: https://www.paypal.me/markfelt
From playlist Hitler Various Subjects