1. Migratory birds, especially pigeons and geese, are used as communication tools.
2. the way to make stuffing, such as hiding in fish belly, cake, steamed stuffed bun, etc.
3. With special sounds, such as bells, drums and firecrackers.
4. There are lights and firelights, such as Kongming lanterns and beacon towers.
5. There are other signs and decorations. , and other signs to lure the enemy.
Modern information dissemination mode:
1. Wired communication transmission, such as telephone, fax, telegram, television, etc.
2. Wireless communication transmission, such as walkie-talkies, pagers (to be eliminated), mobile phones, radios, etc.
3. Digital communication transmission, the most familiar, networked computers, digital TV.
4. Paper communication transmission, such as letters and newspapers.
5. Bell and drum, fireworks, pigeons, semaphores, wolf smoke and other ways to transmit information. Modern people, modern people send information by telegraph.
Modern people, the way modern people transmit information.
facsimile
radiobroadcast
make a telephone call
Send text messages or make phone calls with your mobile phone.
Digital fax machine
use
computer network
Transmission—
Words,
Sound,
videotape ...
QQ:
Modern: Express delivery, online delivery, mobile phone, telephone, PHS, letter, express delivery, advertisement, e-mail, short message, telephone and fax language, eye contact, gesture, mobile phone, computer, business pain, telephone, radio, television and Internet.