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πŸ’½ Π‘Π°ΠΌΡ‹Π΅ массовыС HDD Seagate ST-225 πŸ–₯

Seagate ST-225 β€” Тёсткий диск, Π²Ρ‹ΠΏΡƒΡ‰Π΅Π½Π½Ρ‹ΠΉ Π² 1984 Π³ΠΎΠ΄Ρƒ.
НСкоторыС характСристики ΠΌΠΎΠ΄Π΅Π»ΠΈ:
β–ͺ️ Ρ„ΠΎΡ€ΠΌ-Ρ„Π°ΠΊΡ‚ΠΎΡ€: 5,25 дюйма;
β–ͺ️ ΠΎΠ±ΡŠΡ‘ΠΌ: 20 ΠœΠ±Π°ΠΉΡ‚;
β–ͺ️ ΡΠΊΠΎΡ€ΠΎΡΡ‚ΡŒ вращСния: 3600 RPM;
β–ͺ️ ΡΠΊΠΎΡ€ΠΎΡΡ‚ΡŒ ΠΏΠ΅Ρ€Π΅Π΄Π°Ρ‡ΠΈ Π΄Π°Π½Π½Ρ‹Ρ…: 5 ΠœΠ±ΠΈΡ‚/с;
β–ͺ️ срСднСС врСмя поиска: 65 мс;
β–ͺ️ Ρ‘ΠΌΠΊΠΎΡΡ‚ΡŒ пластины: 10,5 ΠœΠ±Π°ΠΉΡ‚;
β–ͺ️ интСрфСйс: ST-412.

Для ΠΏΠ΅Ρ€Π΅Π΄Π°Ρ‡ΠΈ ΠΈ записи Π΄Π°Π½Π½Ρ‹Ρ… диск использовал схСму кодирования MFM.

#ΠΆΠ΅Π»Π΅Π·ΠΎ #элСктроника #hdd #hardware #схСмотСхника #physics #Π²ΠΈΠ΄Π΅ΠΎΡƒΡ€ΠΎΠΊΠΈ #comuter_science #science

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πŸ’½ Π‘Π°ΠΌΡ‹Π΅ массовыС HDD Seagate ST-225 πŸ–₯

Seagate ST-225 β€” Тёсткий диск, Π²Ρ‹ΠΏΡƒΡ‰Π΅Π½Π½Ρ‹ΠΉ Π² 1984 Π³ΠΎΠ΄Ρƒ.

НСкоторыС характСристики ΠΌΠΎΠ΄Π΅Π»ΠΈ:
β–ͺ️ Ρ„ΠΎΡ€ΠΌ-Ρ„Π°ΠΊΡ‚ΠΎΡ€: 5,25 дюйма;
β–ͺ️ ΠΎΠ±ΡŠΡ‘ΠΌ: 20 ΠœΠ±Π°ΠΉΡ‚;
β–ͺ️ ΡΠΊΠΎΡ€ΠΎΡΡ‚ΡŒ вращСния: 3600 RPM;
β–ͺ️ ΡΠΊΠΎΡ€ΠΎΡΡ‚ΡŒ ΠΏΠ΅Ρ€Π΅Π΄Π°Ρ‡ΠΈ Π΄Π°Π½Π½Ρ‹Ρ…: 5 ΠœΠ±ΠΈΡ‚/с;
β–ͺ️ срСднСС врСмя поиска: 65 мс;
β–ͺ️ Ρ‘ΠΌΠΊΠΎΡΡ‚ΡŒ пластины: 10,5 ΠœΠ±Π°ΠΉΡ‚;
β–ͺ️ интСрфСйс: ST-412.

Для ΠΏΠ΅Ρ€Π΅Π΄Π°Ρ‡ΠΈ ΠΈ записи Π΄Π°Π½Π½Ρ‹Ρ… диск использовал схСму кодирования MFM.

#ΠΆΠ΅Π»Π΅Π·ΠΎ #элСктроника #hdd #hardware #схСмотСхника #physics #Π²ΠΈΠ΄Π΅ΠΎΡƒΡ€ΠΎΠΊΠΈ #comuter_science #science

πŸ’‘ Physics.Math.Code // @physics_lib

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Telegram hopes to raise $1bn with a convertible bond private placement

The super secure UAE-based Telegram messenger service, developed by Russian-born software icon Pavel Durov, is looking to raise $1bn through a bond placement to a limited number of investors from Russia, Europe, Asia and the Middle East, the Kommersant daily reported citing unnamed sources on February 18, 2021.The issue reportedly comprises exchange bonds that could be converted into equity in the messaging service that is currently 100% owned by Durov and his brother Nikolai.Kommersant reports that the price of the conversion would be at a 10% discount to a potential IPO should it happen within five years.The minimum bond placement is said to be set at $50mn, but could be lowered to $10mn. Five-year bonds could carry an annual coupon of 7-8%.

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