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Ndeupi musiyano uripo pakati pe serial ports uye parallel ports?

2024-09-27 09:02:48

Nhasi tichataura nezve musiyano pakati pe serial port uye parallel port. Ose ari maviri serial port uye parallel port akajairika macomputer interfaces, ayo anoshandiswa kubatanidza zvishandiso nemakomputa, asi pane misiyano mikuru pakati pavo.

Zviri Mukati

1. Chii chinonzi parallel port?
2. Chii chinonzi serial port?
3. Ndeupi musiyano pakati pezviviri izvi?
4. Mhedziso

1. Chii chinonzi parallel port?

Parallel port ndiyo chidimbu che parallel interface. Chiteshi chengarava chakafanana chemakombuta emaindasitiri chinoshandisa 25-pini D-yakaumbwa yekubatanidza. Izvo zvinonzi "parallel" zvinoreva kuti 8 bits ye data inotapurirwa panguva imwe chete kuburikidza nemitsara yakafanana, kuitira kuti kukurumidza kwekufambisa kwemashoko kunovandudzwa zvikuru, asi kureba kwemutsara wekufambisa kwakafanana kunogumira. Nemhaka yokuti urefu hunowedzera, kupindira kuchawedzera, uye data ichave yakakanganisa kukanganisa. Parizvino, iyo parallel interface inonyanya kushandiswa seprinta port, nezvimwe.

2. Chii chinonzi serial port?

A serial port inonziwo serial communication interface, kana COM port. Zvinoenderana nemagetsi zviyero uye mapuroteni, serial ports inosanganisira RS-232-C, RS-422, RS485, USB, nezvimwe.

3. Ndeupi musiyano pakati pezviviri izvi?

1. Serial ports uye parallel ports inoshandiswa nzira dzakasiyana dzekutumira data. Iyo serial port i-bit-by-bit transmission interface inotumira data kune komputa kana imwe mudziyo zvishoma nezvishoma. Iyi nzira inogona kuve nechokwadi chekuvimbika kwekufambiswa kwedata, asi kumhanya kwekufambisa kunononoka. Iyo parallel port inofananidzwa yekufambisa interface iyo inogona kutumira akawanda mabhiti e data panguva imwe chete, saka iyo yekumhanyisa kumhanya inokurumidza, asi inokanganiswa nyore nekukanganisika.

2. Serial ports uye parallel ports zvakare zvakasiyana mumidziyo uye mamiriro anoshandiswa. Serial ports inowanzo shandiswa kubatanidza mamwe ma-low-speed madivayiri, akadai semaprinta, modem, etc. Yavo data transmission speed haisi yakakwirira, asi kuvimbika kwekufambisa kwemashoko kunodiwa kuti kuve kwakakwirira. Parallel ports dzinowanzo shandiswa kubatanidza michina inomhanya-mhanya, senge hard drive, optical drives, zvichingodaro, izvo zvinoda kukurumidza kutapurirana uye huwandu hukuru hwekufambiswa kwedata, asi zvine zvishoma zvinodiwa pakuvimbika kwekufambiswa kwedata.

3. The kupindirana kwemuviri ye serial ports uye parallel ports zvakare akasiyana. Serial ports inowanzo shandisa DB9 kana DB25 interfaces, nepo parallel ports inoshandisa DB25 interfaces kana parallel port pini. Mukuwedzera, serial ports inogonawo kushandisa USB interfaces yekufambisa data.

4. Mhedziso

Pane misiyano mikuru pakati pe serial ports uye parallel ports maererano nenzira dzekutumira data, mamiriro ekushandisa, uye maratidziro emuviri. Naizvozvo, kana uchisarudza chinongedzo, unofanirwa kusarudza iyo yakakodzera interface zvichienderana nezvinodiwa zvekushandisa.

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