NTSC stands for National Television System Committee, which devised the NTSC television broadcast system in 1953. NTSC is also commonly used to refer to one type of television signal that can be recorded on various formats such as DVD, VHS, 3/4" U-matic and Betacam.
The NTSC standard has a fixed vertical resolution of 525 horizontal lines stacked on top of each other, with varying amounts of "lines" making up the horizontal resolution, depending on the electronics and formats involved. There are 59.94 fields displayed per second. A field is a set of even lines, or odd lines. The odd and even fields are displayed sequentially, thus interlacing the full frame. One full frame, therefore, is made of two interlaced fields, and is displayed about every 1/30 of a second.
NTSC countries are: USA, Antigua, Bahamas, Barbados, Belize, Bermuda, Bolivia, Burma, Canada, Chile, Colombia, Costa Rica, Cuba, Dominican Republic, Ecuador, El Salvador, Greenland, Guam, Guatemala, Guyana, Honduras, Jamaica, Japan, South Korea, Mexico, Netherlands Antilles, Nicaragua, Panama, Peru, Philippines, Puerto Rico, St. Vincent & the Grenadines, St. Kitts, Saipan, Samoa, Surinam, Taiwan, Tobago, Trinidad, Venezuela, Virgin Islands.
The following countries were listed as Monochrome 625/50 in one resource:
Angola, Burkina Faso, Burundi, Central African Republic, Equatorial Guinea,
Ethiopia (or PAL or SECAM in other resources).
PAL countries include: Afghanistan, Algeria, Argentina (PAL-N), Australia,
Austria, Bahrain, Bangladesh, Belgium, Brunei, Cameroon, Canary Islands, China,
Cyprus, Denmark, Finland, Germany, Ghana, Gibraltar, Greece (also SECAM),
Hong Kong, Iceland, India, Indonesia, Ireland, Israel, Italy, Jordan, Kenya,
North Korea, Kuwait, Liberia, Luxembourg (also SECAM), Madeira, New Zealand,
Nigeria, Norway, Oman, Pakistan, Paraguay (PAL-N), Portugal, Qatar, Saudi
Arabia (also SECAM), Sierra Leone, Singapore, South Africa, Spain, Sri Lanka,
Sudan, Swaziland, Tanzania, Thailand, Turkey, Uganda, United Arab Emirates,
United Kingdom, Uruguay (PAL-N), Yemen (the former Yemen Arab Republic was
PAL, and the former People's Democratic Republic of Yemen was NTSC ), Yugoslavia,
Countries include: Albania, Benin, Bulgaria, Congo, former Czechoslovakia,
Djibouti, Egypt, France, French Guiana, Gabon, Greece (also PAL), Guadeloupe,
Haiti, Hungary, Iran, Iraq, Ivory Coast, Lebanon, Libya, Luxembourg (also
PAL), Madagascar, Martinique, Mauritius, Monaco (also PAL), Mongolia, Morocco,
New Caledonia, Niger, Poland, Reunion, Romania, Saudi Arabia (also PAL), Senegal,
Syria, Tahiti, Togo, Tunisia, former USSR, Vietnam, Zaire.