Tataiso e felletseng ea Mefuta e Kopanetsoeng ea Lipotoloho (IC).

Integrated Circuits (ICs), litene tsa motheo tsa lisebelisoa tsa sejoale-joale tsa elektroniki, li fetotse theknoloji ho tloha ha li qala. Li-circuits tsena tse nyane tsa elektroniki, tse tsejoang ka hore ke li-chips, li nolofalelitse ts'ebetso e nyane le ntlafatso e kholo ea lisebelisoa tse ngata, ho tloha ho likhomphutha ho isa ho li-smartphone le lisebelisoa tsa bongaka. Blog ena e shebisisa mefuta ea lipotoloho tse kopaneng, kholo ea tsona, le karolo ea tsona ea bohlokoa ho nts'etsopele ea mahlale.

Khetho ea mofuta oa IC e ama jiometri ea pad, tlhahlobo, phomolo ea mocheso le kotsi ea theko; likhetho tsa liphutheloana li lokela ho hokahanngoa le bokhoni ba ho kopanya BGA ha ho hlokahala le ho netefatsoa ka ho fumana likarolo tsa elektroniki.

Ho Utloisisa Lipotoloho Tse Kopantsoeng

Lipotoloho tse kopaneng li latela tšimoloho ea tsona ho tloha lilemong tsa bo-1950, 'me Jack Kilby le Robert Noyce ba tlotloa ka ho theha li-IC tsa pele tse sebetsang. Lintlafatso tsena tsa pele li ile tsa rala motheo oa phetoho e potlakileng ea theknoloji ea IC, e lebisang ho li-microchips tse rarahaneng le tse sebetsang haholo tse sebelisoang kajeno. Ho tloha ho liheke tse bonolo tsa logic ho ea ho li-microprocessors tse tsoetseng pele, li-IC li fetohile tse sebetsang hantle, tse sebetsang hantle, le tse matla haholoanyane, li tsamaisang tsoelo-pele ea mefuta e mengata ea theknoloji.

Digital vs. Analog Integrated Circuits

Phapang ea Motheo Pakeng tsa Digital le Analog ICs

Digital Integrated Circuits e sebetsa ka ho sebelisa lintlha tsa binary, haholo-holo li-zero le tse ling, ho etsa lipalo le ho boloka boitsebiso. Ke mokokotlo oa litsamaiso tsa likhomphutha, tse nolofalletsang ts'ebetso e rarahaneng, taolo ea data, le puisano ea dijithale. Lipotoloho tse Kopanetsoeng tsa Analog, ka lehlakoreng le leng, li sebetsana le matšoao a tsoelang pele a bonahatsang phapang e poteletseng e fumanoang linthong tsa sebele tsa analoge tsa lefatše tse kang molumo, khanya le mocheso. Li-IC tsa analog li bohlokoa bakeng sa ho holisa, ho sefa le ho fetolela matšoao ana a tsoelang pele ho ba sebopeho se loketseng ts'ebetso ea dijithale kapa ho toloka ha batho.

Mehlala ea Digital Integrated Circuits

Mehlala ea li-IC tsa dijithale e kenyelletsa liheke tsa logic, li-microprocessors, le li-memory chips. Likarolo tsena li bohlokoa ho theheng meralo ea likhomphutha le lisebelisoa tse ling tsa dijithale. Liheke tsa logic li theha meaho ea mantlha ea li-circuits tsa dijithale, li-microprocessors li sebetsa e le likarolo tse bohareng tsa ts'ebetso ea likhomphutha, 'me li-memory chips li fana ka bokhoni ba ho boloka data.

Likopo tsa Digital Integrated Circuits

Li-IC tsa Digital li sebelisoa mefuteng e mengata ea lits'ebetso ho tloha ho li-calculator tsa mantlha ho isa lits'ebetsong tse tsoetseng pele tsa likhomphutha. Li bohlokoa ts'ebetsong ea li-smartphone, lik'hamera tsa digital, lithelevishene le lisebelisoa tsa lapeng. Ho nepahala le ho tenyetseha ha li-IC tsa dijithale li li etsa hore e be tse loketseng lits'ebetso tse hlokang likhomphutha tse rarahaneng, polokelo ea data, le ts'ebetso ea matšoao a dijithale.

Mehlala ea Analog Integrated Circuits

Li-IC tsa analog li kenyelletsa li-amplifiers tse sebetsang, li-converter tsa analog-to-digital, le li-loops tse notletsoeng ka mekhahlelo. Li-amplifiers tsa ts'ebetso li sebelisetsoa ho holisa le ho sefa matšoao a analoge, li-converter tsa analog-to-digital li fetola matšoao a analog hore e be sebopeho sa digital, 'me li-loops tse notletsoeng ka mekhahlelo li sebelisetsoa ho hokahanya le ho boloka nako litsamaisong tsa puisano.

Lisebelisoa tsa Analog Integrated Circuits

Li-IC tsa Analog li fumana lits'ebetso libakeng tseo ho tsona ho hlokehang ho sebetsa ka matshwao a nnete. Sena se kenyelletsa liamplifier tsa molumo, molumo oa maqhubu a seea-le-moea, le mekhoa e fapaneng ea ho lemoha le ho beha leihlo. Li bohlokoa hape ho lisebelisoa tsa bongaka tse kang ECG le mechini ea EEG, e sebetsanang le matšoao a 'mele.

Mefuta ea Lipotoloho tse Kopantsoeng tsa Dijithale

Li-microprocessors

Li-microprocessors, tse atisang ho bitsoa "central processing unit" (CPU), ke boko ba lik'homphieutha le lisebelisoa tse ngata tsa elektronike. Ba phetha letoto la litaelo tse bolokiloeng tse bitsoang lenaneo. Mofuta ona oa IC o na le logic circuitry e fanang ka litaelo tsa ts'ebetso ea k'homphieutha. Li-Microprocessors li tloha ho meralo e bonolo bakeng sa mesebetsi ea mantlha ho isa ho meaho e rarahaneng bakeng sa komporo ea maemo a holimo. Li bohlokoa lits'ebetsong ho tloha ho likhomphutha tsa motho le li-smartphones ho isa ho li-server tse kholo le li-supercomputer.

Balaoli ba li-Microcontroller

Li-microcontroller ke li-circuits tse kopaneng tse etselitsoeng ho laola ts'ebetso e itseng ho sistimi e kentsoeng. Microcontroller e kopanya microprocessor e nang le likarolo tse ling tse kang memori (RAM le ROM), likou tsa ho kenya / ho tsoa (I/O), le li-timers ho chip e le 'ngoe. Li etselitsoe ho laola ka ho khetheha lisebelisoa tse kang litsamaiso tsa taolo ea enjine ea koloi, li-remote control, mechini ea liofisi, lisebelisoa, lisebelisoa tsa motlakase, lintho tsa ho bapala le lits'ebetso tse ling tse kentsoeng. Ho kopanngoa ha bona le tsebo ea bona e khethehileng ho etsa hore e be ba loketseng ho sebetsana le mesebetsi e inehetseng ka katleho.

Digital Signal Processors (DSPs)

Digital Signal processors ke li-microprocessors tse khethehileng tse etselitsoeng lipalo tse lebelo le holimo, tse li etsang hore e be tse loketseng ts'ebetso ea mats'oao a dijithale ka nako ea nnete. Li-DSP li bohlokoa lits'ebetsong tse hlokang lipalo tse potlakileng tsa lipalo, joalo ka ts'ebetso ea mats'oao a molumo, ts'ebetso ea litšoantšo tsa dijithale, le likhokahano tsa mehala. Li ntlafalitsoe bakeng sa ts'ebetso e ts'oanang, e li lumellang ho etsa ts'ebetso e mengata ka nako e le 'ngoe, e leng bohlokoa ho sebetsana le li-algorithms tse rarahaneng kapele le ka nepo.

Li-chips tsa Memori

Li-chips tsa memori ke likarolo tsa bohlokoa ho lisebelisoa tsa elektroniki tsa dijithale, tse fanang ka polokelo e hlokahalang bakeng sa data le litaelo tse sebelisoang ke li-microprocessors le li-microcontrollers. Ho na le mefuta e fapaneng ea li-chips tsa memori, ho kenyeletsoa Random Access Memory (RAM), Memory Read-Only Memory (ROM), flash memory, le EEPROM (Electrically Erasable Programmable Read-Only Memory). Mofuta o mong le o mong o sebeletsa merero e fapaneng ea polokelo, ho tloha polokelong ea data ea nakoana ho RAM ho isa polokelong ea nako e telele, e sa fetoheng mohopolong oa flash.

Li-ICs tse utloahalang

Logic ICs ke litšiea tsa ho haha ​​​​lipotoloho tsa dijithale. Li sebelisetsoa ho etsa mesebetsi e bonolo e utloahalang e kang AND, OR, NOT, XOR, NAND, NOR, le XNOR. Li-Logic ICs li bohlokoa ho theheng li-circuits bakeng sa puisano ea dijithale, 'me li ka kopanngoa ho theha mesebetsi e rarahaneng le ts'ebetso ea lisebelisoa tse fapaneng tsa elektroniki. Li bohlokoa ho kenyeng tšebetsong komporo ea dijithale, ts'ebetso ea matšoao, le mesebetsi ea taolo ea data.

Mefuta ea Lipotoloho tse Kopantsoeng tsa Analog

Li-amplifiers tse sebetsang (Op-Amps)

Li-Amplifiers tsa Ts'ebetso, tse tsejoang ka hore ke Op-Amps, ke litšiea tsa mantlha tsa elektroniki tsa analog. Likarolo tsena tse feto-fetohang li holisa mats'oao a motlakase, e leng se etsang hore e be karolo ea lipotoloho tse fapaneng. Op-Amps e sebelisoa maemong a mats'oao, ho sefa, le ho etsa ts'ebetso ea lipalo joalo ka ho kenyelletsa, ho tlosa, ho kopanya le ho arola. Lisebelisoa tsa bona li tloha ho lisebelisoa tsa molumo le tsa video ho ea ho lisebelisoa le lisebelisoa tsa taolo.

Li-voltage Regulators

Li-Voltage Regulator li bohlokoa ho boloka boemo ba motlakase bo sa khaotseng ho sa tsotellehe phapang ea matla a motlakase kapa maemo a mojaro. Li bohlokoa lipotolohong tsa phepelo ea motlakase ho netefatsa ts'ebetso e tsitsitseng ea lisebelisoa tsa elektroniki. Li-voltage regulator li tla ka mefuta e 'meli ea mantlha: linear le switching. Li-linear regulators li fana ka tharollo e bonolo, e tlaase ea lerata bakeng sa phepelo e tsitsitseng ea motlakase, ha li-switching regulators li fana ka katleho e kholoanyane 'me li sebelisoa lits'ebetsong tse hlokang mefuta e mengata ea motlakase oa ho kenya letsoho le ho senyeha ha matla a tlaase.

Radio Frequency (RF) ICs

Radio Frequency Integrated Circuits (RF ICs) ke li-IC tse khethehileng tse etselitsoeng ho sebetsa ka maqhubu a phahameng haholo, a bohlokoa mekhoeng ea puisano e se nang mohala. Li sebelisoa lits'ebetsong tse fapaneng, ho kenyelletsa le mehala ea cellular, marang-rang a se nang mohala, le likhokahano tsa sathelaete. Li-RF ICs li sebetsana le mesebetsi e kang ho holisa lets'oao, ho fetolela khafetsa, le ho feto-fetoha ha maemo. Ka tsoelo-pele ea thekenoloji, li-IC tsena li tsoela pele ho fetoha, li fetoha tse kopanetsoeng le tse kopanetsoeng, tse nolofalletsang lisebelisoa tse se nang mohala tse tsoetseng pele le tse nyenyane.

Liphetoho tsa Analog-to-Digital (ADCs)

Li-Analog-to-Digital Converters (ADCs) li bapala karolo ea bohlokoa ho lokiseng lefatše la analoge le la dijithale. Ba fetolela matšoao a analog, joalo ka molumo le leseli, ho ba data ea dijithale e ka sebetsoang ke litsamaiso tsa dijithale. Li-ADC li sebelisoa lisebelisoa tse fapaneng tse kang lik'hamera tsa digital, libapali tsa 'mino, le mekhoa ea ho fumana lintlha. Ts'ebetso ea ADC e khetholloa ka qeto ea eona, lebelo, le tšebeliso ea matla, e amang boleng le katleho ea kemelo ea dijithale ea lets'oao la analoge.

Lifetoleli tsa Digital-to-Analog (DACs)

Digital-to-Analog Converters (DACs) li etsa mosebetsi o fapaneng le oa ADCs. Ba fetolela data ea dijithale hore e be matšoao a analog. Phetoho ena e bohlokoa lits'ebetsong tse kang ho bapala molumo, moo lifaele tsa audio tsa dijithale li tlamehang ho fetoloa matšoao a analog bakeng sa libui kapa li-headphone. Li-DAC li boetse li sebelisoa lits'ebetsong tsa mehala, moo li fetolelang matšoao a dijithale hore e be analoge bakeng sa phetiso ea li-analog.

Lipotoloho tse Kopantsoeng tsa Lipontšo tse Kopantsoeng

Motsoako oa Mesebetsi ea Digital le Analog

Li-circuits tse kopantseng li-mixed-signal ke motsoako oa li-circuits tsa analog le tsa digital ho chip e le 'ngoe. Motsoako ona o lumella li-IC ho sebetsana le matšoao a analoge ka bobeli (joaloka molumo, mocheso, kapa leseli) le matshwao a dijithale (joalo ka data ea binary likhomphutha). Matla a li-IC tsa matšoao a tsoakiloeng a holim'a bokhoni ba tsona ba ho koala lekhalo pakeng tsa lefats'e la sebele, e leng analoge, le matla a ho sebetsa a digital a lisebelisoa tsa elektronike tsa morao-rao. Ba ka sebelisana ka kotloloho le tikoloho, ba fetolela lipehelo tsa analog ho data ea dijithale bakeng sa ts'ebetso, ebe ba khutlela ho matšoao a analog ho laola kapa ho khanna lits'ebetso tse fapaneng.

Lisebelisoa ka har'a lisebelisoa tse fapaneng

Li-IC tsa li-Mixed-signal li fumaneha hohle theknolojing ea sejoale-joale, li fumana ts'ebeliso mefuteng e mengata ea lisebelisoa. Li bohlokoa ho li-smartphones, moo li sebetsanang le matšoao bakeng sa li-skrini tsa touch, lik'hamera le litsamaiso tsa molumo. Ho lisebelisoa tsa elektroniki tsa likoloi, ba laola lits'ebetso ho tloha taolong ea enjine ho isa boithabisong ba koloing. Lisebelisoa tsa elektroniki tsa bareki joalo ka lik'hamera tsa dijithale, libapali tsa 'mino le lisebelisoa tse bohlale tsa lapeng li itšetlehile haholo ka li-IC tsena bakeng sa ho hokahana le li-sensor le ho etsa mesebetsi e rarahaneng ea taolo. Lisebelisoa tsa indasteri li kenyelletsa litsamaiso tsa othomathike, moo li-IC tse tsoakiloeng li thusang ho beha leihlo le ho laola lits'ebetso tsa indasteri.

Mathata a Moralo le Tlhahiso

Moralo le tlhahiso ea li-IC tsa matšoao a tsoakiloeng li baka mathata a ikhethang ka lebaka la ho kopanngoa ha likarolo tsa analoge le tsa dijithale. Li-circuits tsa analog li na le kutloelo-bohloko lerata 'me li hloka ho bapisa likarolo tse nepahetseng, ha li-circuits tsa digital li ka hlahisa lerata le leholo, le ka sitisang matšoao a analog. Ho leka-lekanya likarolo tsena ho hloka moralo o hlokolosi le mekhoa ea ho itšehla thajana. Ts'ebetso ea tlhahiso e boetse e hloka ho nepahala ho holimo ho netefatsa hore likarolo tsa digital le analog li sebetsa ka nepo ka har'a chip e le 'ngoe.

Mekhoa ea Bokamoso le Tsoelo-pele

Tsoelo-pele ea theknoloji ea IC e tsoakiloeng e ntse e tsoela pele ho sutumelletsa meeli ea se ka khonehang ho lisebelisoa tsa elektroniki. Litlhahiso li tsepamisitse maikutlo ho fokotsa tšebeliso ea matla, lebelo le ntseng le eketseha, le likaroloana tse nyenyane, tse lumellang lisebelisoa tse sebetsang hantle le tse baballang matla. Litheknoloji tse ntseng li hlaha joalo ka IoT le lisebelisoa tse ka roaloang, tse hlokang ho hokahana ka mokhoa o se nang moeli oa li-sensor, ts'ebetso ea data, le khokahanyo, li reretsoe ho rua molemo haholo tsoelopeleng ena ho li-IC tsa matšoao a kopaneng.

Application-Specific Integrated Circuits (ASICs) le Field-Programmable Gate Arrays (FPGAs)

Ho Utloisisa ASICs: Tailored Effective

Application-Specific Integrated Circuits (ASICs) ke li-chips tse khethehileng tse etselitsoeng kopo kapa mosebetsi o itseng. Ho fapana le li-IC tsa sepheo se akaretsang, li-ASIC li ntlafalitsoe ho etsa mesebetsi e itseng ka katleho le lebelo le holimo. Tsebo ena e ba etsa hore e be tse loketseng lihlahisoa tsa boleng bo holimo moo ntlafatso ea ts'ebetso le phokotso ea litšenyehelo li leng bohlokoa. Li-ASIC li sebelisoa hangata ho lisebelisoa tsa elektroniki tsa bareki, litsamaiso tsa likoloi le lisebelisoa tsa marang-rang. Leha ho le joalo, tlhaho ea bona e hlakileng, e bolela litšenyehelo tse phahameng tsa nts'etsopele le nako e telele ea ho ea 'marakeng, ho etsa hore li se ke tsa tšoaneleha bakeng sa tlhahiso e potlakileng kapa tlhahiso e nyenyane.

FPGAs: Ho feto-fetoha le maemo le ho feto-fetoha hape

Li-Field-Programmable Gate Arrays (FPGAs) li hlahella ka ho feto-fetoha ha tsona le ho feto-fetoha ha tsona. Ho fapana le li-ASIC, li-FPGA li ka hlophisoa le ho hlophisoa bocha kamora ho etsoa, ​​​​ho fana ka phetoho e kholo moralong le ts'ebelisong. Reconfigurability ena e lumella ho lokisoa ha liphoso, lintlafatso, esita le ho hlophisa bocha ka botlalo bakeng sa lits'ebetso tse fapaneng, ho etsa hore FPGA e be khetho e tsebahalang ho prototyping, lipatlisiso, le maemo a nts'etsopele. Li sebelisoa haholo ts'ebetsong ea mats'oao, lisebelisoa tsa sefofane le ts'ireletso, le mehala ea puisano. Monyetla o ka sehloohong oa li-FPGA o ho bokhoni ba bona ba ho ikamahanya le litlhoko le mahlale a tsoelang pele, leha hangata e le ka theko e phahameng ea yuniti le ts'ebetso e tlase ea ts'ebetso ha e bapisoa le li-ASIC.

Tlhahlobo ea Papiso: ASICs vs. FPGAs

Khetho lipakeng tsa ASIC le FPGA e ipapisitse le lintlha tse kang litšenyehelo, litlhoko tsa ts'ebetso, nako ea nts'etsopele, le bongata ba tlhahiso. Li-ASIC li fana ka ts'ebetso e phahameng le litšenyehelo tse tlase tsa yuniti ka bongata, empa ka litšenyehelo tse kholo tsa nts'etsopele le ho se fetohe ha tlhahiso ea morao-rao. Li-FPGA, ka lehlakoreng le leng, li fana ka phetoho ea moralo le lipotoloho tse khutšoane tsa nts'etsopele, tse loketseng tlhahiso ea molumo o tlase ho isa bohareng kapa merero e matla e hlokang ho ntlafatsoa khafetsa. Leha ho le joalo, hangata ba fumana litšenyehelo tse phahameng tsa yuniti ka 'ngoe le ts'ebetso e tlase ea ts'ebetso ho feta li-ASIC. Ka kakaretso, qeto lipakeng tsa ASIC le FPGA ke phapanyetsano lipakeng tsa litšenyehelo tse tlang pele le ho feto-fetoha ha maemo, ntlafatso ea ts'ebetso, le scalability ea nako e telele.

Lipotoloho tse Kopantsoeng tsa Matla

ICs bakeng sa Tsamaiso ea Matla

Power Integrated Circuits e bapala karolo ea bohlokoa ho laola le ho laola matla a lisebelisoa tsa elektroniki. Li etselitsoe ho sebetsana le mesebetsi e fapaneng e kang ho fetola li-voltage, ho laola ho tjhaja betri, le ho aba matla ka nepo ka har'a sistimi. Li-IC tsena li bohlokoa ho ntlafatseng ts'ebeliso ea matla, ka ho lelefatsa bophelo ba betri le ho ntlafatsa ts'ebetso ea lisebelisoa ka kakaretso. Ho lisebelisoa tsa elektronike tse nkehang joaloka li-smartphone, li-laptops, le theknoloji e aparoang, li-IC tsa motlakase li bohlokoa haholo bakeng sa bokhoni ba tsona ba ho laola matla ka mekhoa e kopanetsoeng le e sebetsang hantle.

Mefuta ea Lipotoloho tse Kopantsoeng tsa Matla

Ho na le mefuta e 'maloa ea li-IC tsa matla, e' ngoe le e 'ngoe e etselitsoe mesebetsi e itseng. Ka mohlala, balaoli ba motlakase ba boloka motlakase o sa khaotseng ho sa tsotellehe phapang ea matla a ho kenya kapa maemo a mojaro. Li-switching regulators li fana ka ts'ebetso e phahameng ea phetolo ea matla ha e bapisoa le li-linear regulators. Mefuta e meng e kenyelletsa li-IC tsa taolo ea betri, tse netefatsang ho tjhaja ho bolokehile le ho sebetsa hantle ha libeteri, le liamplifiers tsa motlakase, tse sebelisoang haholo puisanong e se nang mohala bakeng sa ho holisa mats'oao.

Mathata a Moralo le Litlhahiso

Ho etsa li-IC tsa matla ho hlahisa liphephetso tse ikhethang, haholo ho leka-lekanya bokhoni, boholo, le ho qhala mocheso. Ha lisebelisoa tsa elektroniki li ntse li fokola 'me li le matla le ho feta, tlhoko ea li-IC tsa motlakase tse kopaneng, empa tse sebetsang hantle e lebisitse ho boqapi bo boholo lebaleng lena. Tsoelo-pele ea thepa ea semiconductor, e kang tšebeliso ea gallium nitride (GaN) le silicon carbide (SiC), e nolofalelitse nts'etsopele ea li-IC tsa matla tse sa sebetseng hantle feela empa hape li nyenyane le tse khonang ho sebetsana le mocheso o phahameng le maqhubu.

Likopo tsa Motlakase o Tsosolositsoeng le Likoloi tsa Motlakase

Ka ntle ho lisebelisoa tsa elektronike tsa bareki, li-IC tsa matla li fetohile tsa bohlokoa ho nts'etsopele ea lisebelisoa tsa matla a tsosolositsoeng le likoloi tsa motlakase (EVs). Ka li-inverters tsa letsatsi, li-IC tsa matla li fetola tlhahiso e fapaneng ea hona joale (DC) ea phanele ea letsatsi ea photovoltaic hore e be motlakase o mong (AC) o ka feptjoang ka marang-rang a motlakase. Ho li-EV, ba laola phallo ea matla lipakeng tsa betri, enjene le lits'ebetso tse ling, ba bapala karolo ea bohlokoa ts'ebetsong ea matla a koloi le ts'ebetsong.

Mekhoa e Hlahang ho Integrated Circuit Technology

Nanotechnology e fetola lefapha la lipotoloho tse kopantsoeng ka ho etsa hore ho be le li-IC tse nyenyane, tse sebetsang hantle le tse matla haholoanyane. Ka ho sebelisa lisebelisoa le lits'ebetso ho nanoscale, baenjiniere ba khona ho paka li-transistors tse ngata sebakeng se fanoeng, ba matlafatsa ts'ebetso haholo le ho fokotsa tšebeliso ea matla ea li-microchips. Tsoelo-pele ena ha se feela ka miniaturization; e mabapi le ho hlakisa bocha meeli ea lebelo le bokhoni ba likhomphutha le lisebelisoa tsa elektroniki.

Microelectromechanical Systems (MEMS) e emela motsoako o tsotehang oa likarolo tsa mochine le tsa elektroniki ka tekanyo e nyenyane. Litsamaiso tsena li ntse li tsoela pele ho kopanngoa le ICs ho fana ka mesebetsi e mecha e kang sensing, actuation, le fluidic control. Theknoloji ea MEMS e fumane lits'ebetso likarolong tse fapaneng, ho tloha ho li-accelerometers ho li-smartphone ho isa ho li-microphone tse nyenyane tse thusang ho utloa, esita le lisebelisoa tse tsoetseng pele tsa bongaka.